[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
The patch has been mainlined as of Linux 5.4-rc1 with: commit feeb07d0ca5ad0d6edb5bb728e33e2e86118529d Author: Matthew Ruffell Date: Thu Aug 15 16:26:40 2019 +1200 Subject: drm/hisilicon/hibmc: Make CONFIG_DRM_HISI_HIBMC depend on ARM64 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=feeb07d0ca5ad0d6edb5bb728e33e2e86118529d -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Released Status in linux source package in Disco: Fix Released Status in linux source package in Eoan: Fix Released Bug description: BugLink: https://bugs.launchpad.net/bugs/1762940 [Impact] amd64 based Huawei servers have problems where the display output of their iBMC chips is broken, resulting in a "blurry" screen when viewed from their in house remote kvm-like console. Example: https://launchpadlibrarian.net/365907668/creen_picture_for_blur.png The issue is caused by the hibmc_drm kernel module being loaded. The PCI ID for the iBMC chips on amd64 hardware is the same as arm64 hardware, but the hibmc_drm driver was developed only for use on arm64 hardware, most notably for the Huawei D05 development board. The impact to Huawei is that their customers cannot use Ubuntu server install media as the screen goes "blurry" when the d-i install media or subuqity installer loads the hibmc_drm kernel module after language selection. The only workaround for their customers is to press the "E" key during the very first installer menu and adding "modprobe.blacklist=hibmc_drm" to the kernel command line in the grub menu. This is not good for customer experience with their servers. Other problems exist for the hibmc_drm driver on amd64, such as working on bios, but not uefi, and not being wayland compatible, making the screen blurry whenever a desktop session is started and gdm loaded. Huawei have asked us to remove hibmc_drm from all architectures except arm64, and this aligns with advice from Hisilicon. [Fix] I modified the config/annotations file to remove all architectures except arm64, and created a patch for Kconfig to set a firm requirement on ARM64 for hibmc_drm. I will send the Kconfig patch upstream in the coming days for a more permanent fix. [Testcase] Apply the patches and run: ubuntu-bionic/CONFIGS$ fakeroot debian/rules genconfigs ubuntu-bionic/CONFIGS$ grep -Rin "hibmc" . ./arm64-config.flavour.generic:5739:CONFIG_DRM_HISI_HIBMC=m You should see that only arm64 has the config option enabled. A test kernel has been built, and is available here: https://launchpad.net/~mruffell/+archive/ubuntu/sf232667-test Huawei requested a test d-i install iso to test server install with, which can be found here and uses the kernel from the ppa above: https://people.canonical.com/~mruffell/sf232667_ubuntu_server_d-i_20190711b1.iso Both the test kernel and the custom d-i install iso have been tested on amd64 Huawei server hardware successfully and video output is functional. [Regression Potential] Regressions will be limited to hardware containing the iBMC chips from Hisilicon, which I believe are exclusive to Huawei servers. I have taken care to ensure that hibmc_drm is enabled for ARM64 so it should not impact kernels built for the Huawei D05 arm64 development board, and d-i will still load the hibmc_drm driver during startup for arm64. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
I have submitted the patch upstream to dri-devel and CC'd the hibmc maintainers. We will see where the discussion goes. https://lists.freedesktop.org/archives/dri-devel/2019-August/231284.html https://lists.freedesktop.org/archives/dri-devel/2019-August/231285.html -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Released Status in linux source package in Disco: Fix Released Status in linux source package in Eoan: Fix Released Bug description: BugLink: https://bugs.launchpad.net/bugs/1762940 [Impact] amd64 based Huawei servers have problems where the display output of their iBMC chips is broken, resulting in a "blurry" screen when viewed from their in house remote kvm-like console. Example: https://launchpadlibrarian.net/365907668/creen_picture_for_blur.png The issue is caused by the hibmc_drm kernel module being loaded. The PCI ID for the iBMC chips on amd64 hardware is the same as arm64 hardware, but the hibmc_drm driver was developed only for use on arm64 hardware, most notably for the Huawei D05 development board. The impact to Huawei is that their customers cannot use Ubuntu server install media as the screen goes "blurry" when the d-i install media or subuqity installer loads the hibmc_drm kernel module after language selection. The only workaround for their customers is to press the "E" key during the very first installer menu and adding "modprobe.blacklist=hibmc_drm" to the kernel command line in the grub menu. This is not good for customer experience with their servers. Other problems exist for the hibmc_drm driver on amd64, such as working on bios, but not uefi, and not being wayland compatible, making the screen blurry whenever a desktop session is started and gdm loaded. Huawei have asked us to remove hibmc_drm from all architectures except arm64, and this aligns with advice from Hisilicon. [Fix] I modified the config/annotations file to remove all architectures except arm64, and created a patch for Kconfig to set a firm requirement on ARM64 for hibmc_drm. I will send the Kconfig patch upstream in the coming days for a more permanent fix. [Testcase] Apply the patches and run: ubuntu-bionic/CONFIGS$ fakeroot debian/rules genconfigs ubuntu-bionic/CONFIGS$ grep -Rin "hibmc" . ./arm64-config.flavour.generic:5739:CONFIG_DRM_HISI_HIBMC=m You should see that only arm64 has the config option enabled. A test kernel has been built, and is available here: https://launchpad.net/~mruffell/+archive/ubuntu/sf232667-test Huawei requested a test d-i install iso to test server install with, which can be found here and uses the kernel from the ppa above: https://people.canonical.com/~mruffell/sf232667_ubuntu_server_d-i_20190711b1.iso Both the test kernel and the custom d-i install iso have been tested on amd64 Huawei server hardware successfully and video output is functional. [Regression Potential] Regressions will be limited to hardware containing the iBMC chips from Hisilicon, which I believe are exclusive to Huawei servers. I have taken care to ensure that hibmc_drm is enabled for ARM64 so it should not impact kernels built for the Huawei D05 arm64 development board, and d-i will still load the hibmc_drm driver during startup for arm64. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
This bug was fixed in the package linux - 5.0.0-25.26 --- linux (5.0.0-25.26) disco; urgency=medium * CVE-2019-1125 - x86/cpufeatures: Carve out CQM features retrieval - x86/cpufeatures: Combine word 11 and 12 into a new scattered features word - x86/speculation: Prepare entry code for Spectre v1 swapgs mitigations - x86/speculation: Enable Spectre v1 swapgs mitigations - x86/entry/64: Use JMP instead of JMPQ - x86/speculation/swapgs: Exclude ATOMs from speculation through SWAPGS -- Kleber Sacilotto de Souza Thu, 01 Aug 2019 12:04:35 +0200 ** Changed in: linux (Ubuntu Disco) Status: Fix Committed => Fix Released ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-1125 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Committed Status in linux source package in Disco: Fix Released Status in linux source package in Eoan: Fix Released Bug description: BugLink: https://bugs.launchpad.net/bugs/1762940 [Impact] amd64 based Huawei servers have problems where the display output of their iBMC chips is broken, resulting in a "blurry" screen when viewed from their in house remote kvm-like console. Example: https://launchpadlibrarian.net/365907668/creen_picture_for_blur.png The issue is caused by the hibmc_drm kernel module being loaded. The PCI ID for the iBMC chips on amd64 hardware is the same as arm64 hardware, but the hibmc_drm driver was developed only for use on arm64 hardware, most notably for the Huawei D05 development board. The impact to Huawei is that their customers cannot use Ubuntu server install media as the screen goes "blurry" when the d-i install media or subuqity installer loads the hibmc_drm kernel module after language selection. The only workaround for their customers is to press the "E" key during the very first installer menu and adding "modprobe.blacklist=hibmc_drm" to the kernel command line in the grub menu. This is not good for customer experience with their servers. Other problems exist for the hibmc_drm driver on amd64, such as working on bios, but not uefi, and not being wayland compatible, making the screen blurry whenever a desktop session is started and gdm loaded. Huawei have asked us to remove hibmc_drm from all architectures except arm64, and this aligns with advice from Hisilicon. [Fix] I modified the config/annotations file to remove all architectures except arm64, and created a patch for Kconfig to set a firm requirement on ARM64 for hibmc_drm. I will send the Kconfig patch upstream in the coming days for a more permanent fix. [Testcase] Apply the patches and run: ubuntu-bionic/CONFIGS$ fakeroot debian/rules genconfigs ubuntu-bionic/CONFIGS$ grep -Rin "hibmc" . ./arm64-config.flavour.generic:5739:CONFIG_DRM_HISI_HIBMC=m You should see that only arm64 has the config option enabled. A test kernel has been built, and is available here: https://launchpad.net/~mruffell/+archive/ubuntu/sf232667-test Huawei requested a test d-i install iso to test server install with, which can be found here and uses the kernel from the ppa above: https://people.canonical.com/~mruffell/sf232667_ubuntu_server_d-i_20190711b1.iso Both the test kernel and the custom d-i install iso have been tested on amd64 Huawei server hardware successfully and video output is functional. [Regression Potential] Regressions will be limited to hardware containing the iBMC chips from Hisilicon, which I believe are exclusive to Huawei servers. I have taken care to ensure that hibmc_drm is enabled for ARM64 so it should not impact kernels built for the Huawei D05 arm64 development board, and d-i will still load the hibmc_drm driver during startup for arm64. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
This bug was fixed in the package linux - 5.2.0-10.11 --- linux (5.2.0-10.11) eoan; urgency=medium * eoan/linux: 5.2.0-10.11 -proposed tracker (LP: #1838113) * Packaging resync (LP: #1786013) - [Packaging] resync git-ubuntu-log * Eoan update: v5.2.4 upstream stable release (LP: #1838428) - bnx2x: Prevent load reordering in tx completion processing - caif-hsi: fix possible deadlock in cfhsi_exit_module() - hv_netvsc: Fix extra rcu_read_unlock in netvsc_recv_callback() - igmp: fix memory leak in igmpv3_del_delrec() - ipv4: don't set IPv6 only flags to IPv4 addresses - ipv6: rt6_check should return NULL if 'from' is NULL - ipv6: Unlink sibling route in case of failure - net: bcmgenet: use promisc for unsupported filters - net: dsa: mv88e6xxx: wait after reset deactivation - net: make skb_dst_force return true when dst is refcounted - net: neigh: fix multiple neigh timer scheduling - net: openvswitch: fix csum updates for MPLS actions - net: phy: sfp: hwmon: Fix scaling of RX power - net_sched: unset TCQ_F_CAN_BYPASS when adding filters - net: stmmac: Re-work the queue selection for TSO packets - net/tls: make sure offload also gets the keys wiped - nfc: fix potential illegal memory access - r8169: fix issue with confused RX unit after PHY power-down on RTL8411b - rxrpc: Fix send on a connected, but unbound socket - sctp: fix error handling on stream scheduler initialization - sctp: not bind the socket in sctp_connect - sky2: Disable MSI on ASUS P6T - tcp: be more careful in tcp_fragment() - tcp: fix tcp_set_congestion_control() use from bpf hook - tcp: Reset bytes_acked and bytes_received when disconnecting - vrf: make sure skb->data contains ip header to make routing - net/mlx5e: IPoIB, Add error path in mlx5_rdma_setup_rn - net: bridge: mcast: fix stale nsrcs pointer in igmp3/mld2 report handling - net: bridge: mcast: fix stale ipv6 hdr pointer when handling v6 query - net: bridge: don't cache ether dest pointer on input - net: bridge: stp: don't cache eth dest pointer before skb pull - macsec: fix use-after-free of skb during RX - macsec: fix checksumming after decryption - netrom: fix a memory leak in nr_rx_frame() - netrom: hold sock when setting skb->destructor - selftests: txring_overwrite: fix incorrect test of mmap() return value - net/tls: fix poll ignoring partially copied records - net/tls: reject offload of TLS 1.3 - net/mlx5e: Fix port tunnel GRE entropy control - net/mlx5e: Rx, Fix checksum calculation for new hardware - net/mlx5e: Fix return value from timeout recover function - net/mlx5e: Fix error flow in tx reporter diagnose - bnxt_en: Fix VNIC accounting when enabling aRFS on 57500 chips. - mlxsw: spectrum_dcb: Configure DSCP map as the last rule is removed - net/mlx5: E-Switch, Fix default encap mode - mlxsw: spectrum: Do not process learned records with a dummy FID - dma-buf: balance refcount inbalance - dma-buf: Discard old fence_excl on retrying get_fences_rcu for realloc - Revert "gpio/spi: Fix spi-gpio regression on active high CS" - gpiolib: of: fix a memory leak in of_gpio_flags_quirks() - gpio: davinci: silence error prints in case of EPROBE_DEFER - MIPS: lb60: Fix pin mappings - perf script: Assume native_arch for pipe mode - perf/core: Fix exclusive events' grouping - perf/core: Fix race between close() and fork() - ext4: don't allow any modifications to an immutable file - ext4: enforce the immutable flag on open files - mm: add filemap_fdatawait_range_keep_errors() - jbd2: introduce jbd2_inode dirty range scoping - ext4: use jbd2_inode dirty range scoping - ext4: allow directory holes - KVM: nVMX: do not use dangling shadow VMCS after guest reset - KVM: nVMX: Clear pending KVM_REQ_GET_VMCS12_PAGES when leaving nested - Revert "kvm: x86: Use task structs fpu field for user" - sd_zbc: Fix report zones buffer allocation - block: Limit zone array allocation size - net: sched: verify that q!=NULL before setting q->flags - Linux 5.2.4 * linux hwe i386 kernel 5.0.0-21.22~18.04.1 crashes on Lenovo x220 (LP: #1838115) - x86/mm: Check for pfn instead of page in vmalloc_sync_one() - x86/mm: Sync also unmappings in vmalloc_sync_all() - mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy() * br_netfilter: namespace sysctl operations (LP: #1836910) - netfilter: bridge: port sysctls to use brnf_net - netfilter: bridge: namespace bridge netfilter sysctls - netfilter: bridge: prevent UAF in brnf_exit_net() * Eoan update: v5.2.3 upstream stable release (LP: #1838089) - ath10k: Check tx_stats before use it - ath10k: htt: don't use txdone_fifo with SDIO - ath10k: fix incorrect multicast/broadcast rate setting - ath9k: Don't trust TX status TID
[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
I installed linux-hwe 4.15.0-57 #63~16.04.1-Ubuntu on xenial, and ensured the -modules and -modules-extra package was installed. I went into /var/lib/modules/4.15.0-56/ and did a search for hibmc_drm. There was no mention apart from a header Makefile. The module was not built and not present on amd64. Tests have been successful on bionic, so I am happy to mark this as fixed for xenial. ** Tags removed: verification-needed-xenial ** Tags added: verification-done-xenial -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers Status in linux package in Ubuntu: Fix Committed Status in linux source package in Bionic: Fix Committed Status in linux source package in Disco: Fix Committed Status in linux source package in Eoan: Fix Committed Bug description: BugLink: https://bugs.launchpad.net/bugs/1762940 [Impact] amd64 based Huawei servers have problems where the display output of their iBMC chips is broken, resulting in a "blurry" screen when viewed from their in house remote kvm-like console. Example: https://launchpadlibrarian.net/365907668/creen_picture_for_blur.png The issue is caused by the hibmc_drm kernel module being loaded. The PCI ID for the iBMC chips on amd64 hardware is the same as arm64 hardware, but the hibmc_drm driver was developed only for use on arm64 hardware, most notably for the Huawei D05 development board. The impact to Huawei is that their customers cannot use Ubuntu server install media as the screen goes "blurry" when the d-i install media or subuqity installer loads the hibmc_drm kernel module after language selection. The only workaround for their customers is to press the "E" key during the very first installer menu and adding "modprobe.blacklist=hibmc_drm" to the kernel command line in the grub menu. This is not good for customer experience with their servers. Other problems exist for the hibmc_drm driver on amd64, such as working on bios, but not uefi, and not being wayland compatible, making the screen blurry whenever a desktop session is started and gdm loaded. Huawei have asked us to remove hibmc_drm from all architectures except arm64, and this aligns with advice from Hisilicon. [Fix] I modified the config/annotations file to remove all architectures except arm64, and created a patch for Kconfig to set a firm requirement on ARM64 for hibmc_drm. I will send the Kconfig patch upstream in the coming days for a more permanent fix. [Testcase] Apply the patches and run: ubuntu-bionic/CONFIGS$ fakeroot debian/rules genconfigs ubuntu-bionic/CONFIGS$ grep -Rin "hibmc" . ./arm64-config.flavour.generic:5739:CONFIG_DRM_HISI_HIBMC=m You should see that only arm64 has the config option enabled. A test kernel has been built, and is available here: https://launchpad.net/~mruffell/+archive/ubuntu/sf232667-test Huawei requested a test d-i install iso to test server install with, which can be found here and uses the kernel from the ppa above: https://people.canonical.com/~mruffell/sf232667_ubuntu_server_d-i_20190711b1.iso Both the test kernel and the custom d-i install iso have been tested on amd64 Huawei server hardware successfully and video output is functional. [Regression Potential] Regressions will be limited to hardware containing the iBMC chips from Hisilicon, which I believe are exclusive to Huawei servers. I have taken care to ensure that hibmc_drm is enabled for ARM64 so it should not impact kernels built for the Huawei D05 arm64 development board, and d-i will still load the hibmc_drm driver during startup for arm64. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- xenial' to 'verification-done-xenial'. If the problem still exists, change the tag 'verification-needed-xenial' to 'verification-failed- xenial'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-xenial -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers Status in linux package in Ubuntu: Fix Committed Status in linux source package in Bionic: Fix Committed Status in linux source package in Disco: Fix Committed Status in linux source package in Eoan: Fix Committed Bug description: BugLink: https://bugs.launchpad.net/bugs/1762940 [Impact] amd64 based Huawei servers have problems where the display output of their iBMC chips is broken, resulting in a "blurry" screen when viewed from their in house remote kvm-like console. Example: https://launchpadlibrarian.net/365907668/creen_picture_for_blur.png The issue is caused by the hibmc_drm kernel module being loaded. The PCI ID for the iBMC chips on amd64 hardware is the same as arm64 hardware, but the hibmc_drm driver was developed only for use on arm64 hardware, most notably for the Huawei D05 development board. The impact to Huawei is that their customers cannot use Ubuntu server install media as the screen goes "blurry" when the d-i install media or subuqity installer loads the hibmc_drm kernel module after language selection. The only workaround for their customers is to press the "E" key during the very first installer menu and adding "modprobe.blacklist=hibmc_drm" to the kernel command line in the grub menu. This is not good for customer experience with their servers. Other problems exist for the hibmc_drm driver on amd64, such as working on bios, but not uefi, and not being wayland compatible, making the screen blurry whenever a desktop session is started and gdm loaded. Huawei have asked us to remove hibmc_drm from all architectures except arm64, and this aligns with advice from Hisilicon. [Fix] I modified the config/annotations file to remove all architectures except arm64, and created a patch for Kconfig to set a firm requirement on ARM64 for hibmc_drm. I will send the Kconfig patch upstream in the coming days for a more permanent fix. [Testcase] Apply the patches and run: ubuntu-bionic/CONFIGS$ fakeroot debian/rules genconfigs ubuntu-bionic/CONFIGS$ grep -Rin "hibmc" . ./arm64-config.flavour.generic:5739:CONFIG_DRM_HISI_HIBMC=m You should see that only arm64 has the config option enabled. A test kernel has been built, and is available here: https://launchpad.net/~mruffell/+archive/ubuntu/sf232667-test Huawei requested a test d-i install iso to test server install with, which can be found here and uses the kernel from the ppa above: https://people.canonical.com/~mruffell/sf232667_ubuntu_server_d-i_20190711b1.iso Both the test kernel and the custom d-i install iso have been tested on amd64 Huawei server hardware successfully and video output is functional. [Regression Potential] Regressions will be limited to hardware containing the iBMC chips from Hisilicon, which I believe are exclusive to Huawei servers. I have taken care to ensure that hibmc_drm is enabled for ARM64 so it should not impact kernels built for the Huawei D05 arm64 development board, and d-i will still load the hibmc_drm driver during startup for arm64. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
I installed 4.15.0-56-generic to a bionic VM, with the -modules and -modules-extra packages. I went into /var/lib/modules/4.15.0-56/ and did a search for hibmc_drm. There was no mention apart from a header Makefile. The module was not built and not present on amd64. I did the same for 5.0.0-22-generic in a disco VM, and the module was not built and was not present. 4.15.0-56-generic has been installed to a amd64 based Huawei server which was having the issues explained in this bug, and since the module was not present, the screen was not "blurry" when a desktop environment was installed and viewed from the remote access tool used by Huawei. To ensure that ARM64 still has the kernel module built, I also downloaded linux-modules-extra for 4.15.0-56-generic for ARM64. The hibmc_drm module is still present in /var/lib/modules/4.15.0-56/kernel/drivers/gpu/drm/hisilicon/hibmc This means that Huawei's arm64 based servers will not be affected by the change. The fixes solve the problems of the video mode not being right for amd64 based platforms, and does not cause any regressions for ARM64. I am happy to mark this as verified. ** Tags removed: verification-needed-bionic verification-needed-disco ** Tags added: verification-done-bionic verification-done-disco -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers Status in linux package in Ubuntu: Fix Committed Status in linux source package in Bionic: Fix Committed Status in linux source package in Disco: Fix Committed Status in linux source package in Eoan: Fix Committed Bug description: BugLink: https://bugs.launchpad.net/bugs/1762940 [Impact] amd64 based Huawei servers have problems where the display output of their iBMC chips is broken, resulting in a "blurry" screen when viewed from their in house remote kvm-like console. Example: https://launchpadlibrarian.net/365907668/creen_picture_for_blur.png The issue is caused by the hibmc_drm kernel module being loaded. The PCI ID for the iBMC chips on amd64 hardware is the same as arm64 hardware, but the hibmc_drm driver was developed only for use on arm64 hardware, most notably for the Huawei D05 development board. The impact to Huawei is that their customers cannot use Ubuntu server install media as the screen goes "blurry" when the d-i install media or subuqity installer loads the hibmc_drm kernel module after language selection. The only workaround for their customers is to press the "E" key during the very first installer menu and adding "modprobe.blacklist=hibmc_drm" to the kernel command line in the grub menu. This is not good for customer experience with their servers. Other problems exist for the hibmc_drm driver on amd64, such as working on bios, but not uefi, and not being wayland compatible, making the screen blurry whenever a desktop session is started and gdm loaded. Huawei have asked us to remove hibmc_drm from all architectures except arm64, and this aligns with advice from Hisilicon. [Fix] I modified the config/annotations file to remove all architectures except arm64, and created a patch for Kconfig to set a firm requirement on ARM64 for hibmc_drm. I will send the Kconfig patch upstream in the coming days for a more permanent fix. [Testcase] Apply the patches and run: ubuntu-bionic/CONFIGS$ fakeroot debian/rules genconfigs ubuntu-bionic/CONFIGS$ grep -Rin "hibmc" . ./arm64-config.flavour.generic:5739:CONFIG_DRM_HISI_HIBMC=m You should see that only arm64 has the config option enabled. A test kernel has been built, and is available here: https://launchpad.net/~mruffell/+archive/ubuntu/sf232667-test Huawei requested a test d-i install iso to test server install with, which can be found here and uses the kernel from the ppa above: https://people.canonical.com/~mruffell/sf232667_ubuntu_server_d-i_20190711b1.iso Both the test kernel and the custom d-i install iso have been tested on amd64 Huawei server hardware successfully and video output is functional. [Regression Potential] Regressions will be limited to hardware containing the iBMC chips from Hisilicon, which I believe are exclusive to Huawei servers. I have taken care to ensure that hibmc_drm is enabled for ARM64 so it should not impact kernels built for the Huawei D05 arm64 development board, and d-i will still load the hibmc_drm driver during startup for arm64. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed- bionic'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-bionic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers Status in linux package in Ubuntu: Fix Committed Status in linux source package in Bionic: Fix Committed Status in linux source package in Disco: Fix Committed Status in linux source package in Eoan: Fix Committed Bug description: BugLink: https://bugs.launchpad.net/bugs/1762940 [Impact] amd64 based Huawei servers have problems where the display output of their iBMC chips is broken, resulting in a "blurry" screen when viewed from their in house remote kvm-like console. Example: https://launchpadlibrarian.net/365907668/creen_picture_for_blur.png The issue is caused by the hibmc_drm kernel module being loaded. The PCI ID for the iBMC chips on amd64 hardware is the same as arm64 hardware, but the hibmc_drm driver was developed only for use on arm64 hardware, most notably for the Huawei D05 development board. The impact to Huawei is that their customers cannot use Ubuntu server install media as the screen goes "blurry" when the d-i install media or subuqity installer loads the hibmc_drm kernel module after language selection. The only workaround for their customers is to press the "E" key during the very first installer menu and adding "modprobe.blacklist=hibmc_drm" to the kernel command line in the grub menu. This is not good for customer experience with their servers. Other problems exist for the hibmc_drm driver on amd64, such as working on bios, but not uefi, and not being wayland compatible, making the screen blurry whenever a desktop session is started and gdm loaded. Huawei have asked us to remove hibmc_drm from all architectures except arm64, and this aligns with advice from Hisilicon. [Fix] I modified the config/annotations file to remove all architectures except arm64, and created a patch for Kconfig to set a firm requirement on ARM64 for hibmc_drm. I will send the Kconfig patch upstream in the coming days for a more permanent fix. [Testcase] Apply the patches and run: ubuntu-bionic/CONFIGS$ fakeroot debian/rules genconfigs ubuntu-bionic/CONFIGS$ grep -Rin "hibmc" . ./arm64-config.flavour.generic:5739:CONFIG_DRM_HISI_HIBMC=m You should see that only arm64 has the config option enabled. A test kernel has been built, and is available here: https://launchpad.net/~mruffell/+archive/ubuntu/sf232667-test Huawei requested a test d-i install iso to test server install with, which can be found here and uses the kernel from the ppa above: https://people.canonical.com/~mruffell/sf232667_ubuntu_server_d-i_20190711b1.iso Both the test kernel and the custom d-i install iso have been tested on amd64 Huawei server hardware successfully and video output is functional. [Regression Potential] Regressions will be limited to hardware containing the iBMC chips from Hisilicon, which I believe are exclusive to Huawei servers. I have taken care to ensure that hibmc_drm is enabled for ARM64 so it should not impact kernels built for the Huawei D05 arm64 development board, and d-i will still load the hibmc_drm driver during startup for arm64. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
** No longer affects: linux-gcp (Ubuntu Bionic) ** No longer affects: linux-gcp (Ubuntu) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-gcp in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers Status in linux package in Ubuntu: Fix Committed Status in linux source package in Bionic: Fix Committed Status in linux source package in Disco: Fix Committed Status in linux source package in Eoan: Fix Committed Bug description: BugLink: https://bugs.launchpad.net/bugs/1762940 [Impact] amd64 based Huawei servers have problems where the display output of their iBMC chips is broken, resulting in a "blurry" screen when viewed from their in house remote kvm-like console. Example: https://launchpadlibrarian.net/365907668/creen_picture_for_blur.png The issue is caused by the hibmc_drm kernel module being loaded. The PCI ID for the iBMC chips on amd64 hardware is the same as arm64 hardware, but the hibmc_drm driver was developed only for use on arm64 hardware, most notably for the Huawei D05 development board. The impact to Huawei is that their customers cannot use Ubuntu server install media as the screen goes "blurry" when the d-i install media or subuqity installer loads the hibmc_drm kernel module after language selection. The only workaround for their customers is to press the "E" key during the very first installer menu and adding "modprobe.blacklist=hibmc_drm" to the kernel command line in the grub menu. This is not good for customer experience with their servers. Other problems exist for the hibmc_drm driver on amd64, such as working on bios, but not uefi, and not being wayland compatible, making the screen blurry whenever a desktop session is started and gdm loaded. Huawei have asked us to remove hibmc_drm from all architectures except arm64, and this aligns with advice from Hisilicon. [Fix] I modified the config/annotations file to remove all architectures except arm64, and created a patch for Kconfig to set a firm requirement on ARM64 for hibmc_drm. I will send the Kconfig patch upstream in the coming days for a more permanent fix. [Testcase] Apply the patches and run: ubuntu-bionic/CONFIGS$ fakeroot debian/rules genconfigs ubuntu-bionic/CONFIGS$ grep -Rin "hibmc" . ./arm64-config.flavour.generic:5739:CONFIG_DRM_HISI_HIBMC=m You should see that only arm64 has the config option enabled. A test kernel has been built, and is available here: https://launchpad.net/~mruffell/+archive/ubuntu/sf232667-test Huawei requested a test d-i install iso to test server install with, which can be found here and uses the kernel from the ppa above: https://people.canonical.com/~mruffell/sf232667_ubuntu_server_d-i_20190711b1.iso Both the test kernel and the custom d-i install iso have been tested on amd64 Huawei server hardware successfully and video output is functional. [Regression Potential] Regressions will be limited to hardware containing the iBMC chips from Hisilicon, which I believe are exclusive to Huawei servers. I have taken care to ensure that hibmc_drm is enabled for ARM64 so it should not impact kernels built for the Huawei D05 arm64 development board, and d-i will still load the hibmc_drm driver during startup for arm64. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- disco' to 'verification-done-disco'. If the problem still exists, change the tag 'verification-needed-disco' to 'verification-failed-disco'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-disco -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-gcp in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers Status in linux package in Ubuntu: Fix Committed Status in linux-gcp package in Ubuntu: Fix Committed Status in linux source package in Bionic: Fix Committed Status in linux-gcp source package in Bionic: Fix Committed Status in linux source package in Disco: Fix Committed Status in linux source package in Eoan: Fix Committed Bug description: BugLink: https://bugs.launchpad.net/bugs/1762940 [Impact] amd64 based Huawei servers have problems where the display output of their iBMC chips is broken, resulting in a "blurry" screen when viewed from their in house remote kvm-like console. Example: https://launchpadlibrarian.net/365907668/creen_picture_for_blur.png The issue is caused by the hibmc_drm kernel module being loaded. The PCI ID for the iBMC chips on amd64 hardware is the same as arm64 hardware, but the hibmc_drm driver was developed only for use on arm64 hardware, most notably for the Huawei D05 development board. The impact to Huawei is that their customers cannot use Ubuntu server install media as the screen goes "blurry" when the d-i install media or subuqity installer loads the hibmc_drm kernel module after language selection. The only workaround for their customers is to press the "E" key during the very first installer menu and adding "modprobe.blacklist=hibmc_drm" to the kernel command line in the grub menu. This is not good for customer experience with their servers. Other problems exist for the hibmc_drm driver on amd64, such as working on bios, but not uefi, and not being wayland compatible, making the screen blurry whenever a desktop session is started and gdm loaded. Huawei have asked us to remove hibmc_drm from all architectures except arm64, and this aligns with advice from Hisilicon. [Fix] I modified the config/annotations file to remove all architectures except arm64, and created a patch for Kconfig to set a firm requirement on ARM64 for hibmc_drm. I will send the Kconfig patch upstream in the coming days for a more permanent fix. [Testcase] Apply the patches and run: ubuntu-bionic/CONFIGS$ fakeroot debian/rules genconfigs ubuntu-bionic/CONFIGS$ grep -Rin "hibmc" . ./arm64-config.flavour.generic:5739:CONFIG_DRM_HISI_HIBMC=m You should see that only arm64 has the config option enabled. A test kernel has been built, and is available here: https://launchpad.net/~mruffell/+archive/ubuntu/sf232667-test Huawei requested a test d-i install iso to test server install with, which can be found here and uses the kernel from the ppa above: https://people.canonical.com/~mruffell/sf232667_ubuntu_server_d-i_20190711b1.iso Both the test kernel and the custom d-i install iso have been tested on amd64 Huawei server hardware successfully and video output is functional. [Regression Potential] Regressions will be limited to hardware containing the iBMC chips from Hisilicon, which I believe are exclusive to Huawei servers. I have taken care to ensure that hibmc_drm is enabled for ARM64 so it should not impact kernels built for the Huawei D05 arm64 development board, and d-i will still load the hibmc_drm driver during startup for arm64. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
** Also affects: linux-gcp (Ubuntu) Importance: Undecided Status: New ** No longer affects: linux-gcp (Ubuntu) ** No longer affects: linux-gcp (Ubuntu Eoan) ** No longer affects: linux-gcp (Ubuntu Disco) ** Also affects: linux-gcp (Ubuntu) Importance: Undecided Status: New ** No longer affects: linux (Ubuntu Bionic) ** Also affects: linux (Ubuntu Bionic) Importance: Undecided Status: New ** Also affects: linux-gcp (Ubuntu Bionic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Bionic) Status: New => Fix Committed ** Changed in: linux (Ubuntu Bionic) Importance: Undecided => High ** Changed in: linux (Ubuntu Bionic) Assignee: (unassigned) => Matthew Ruffell (mruffell) ** Changed in: linux-gcp (Ubuntu Bionic) Status: New => Fix Committed ** Changed in: linux-gcp (Ubuntu) Status: New => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-gcp in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers Status in linux package in Ubuntu: Fix Committed Status in linux-gcp package in Ubuntu: Fix Committed Status in linux source package in Bionic: Fix Committed Status in linux-gcp source package in Bionic: Fix Committed Status in linux source package in Disco: Fix Committed Status in linux source package in Eoan: Fix Committed Bug description: BugLink: https://bugs.launchpad.net/bugs/1762940 [Impact] amd64 based Huawei servers have problems where the display output of their iBMC chips is broken, resulting in a "blurry" screen when viewed from their in house remote kvm-like console. Example: https://launchpadlibrarian.net/365907668/creen_picture_for_blur.png The issue is caused by the hibmc_drm kernel module being loaded. The PCI ID for the iBMC chips on amd64 hardware is the same as arm64 hardware, but the hibmc_drm driver was developed only for use on arm64 hardware, most notably for the Huawei D05 development board. The impact to Huawei is that their customers cannot use Ubuntu server install media as the screen goes "blurry" when the d-i install media or subuqity installer loads the hibmc_drm kernel module after language selection. The only workaround for their customers is to press the "E" key during the very first installer menu and adding "modprobe.blacklist=hibmc_drm" to the kernel command line in the grub menu. This is not good for customer experience with their servers. Other problems exist for the hibmc_drm driver on amd64, such as working on bios, but not uefi, and not being wayland compatible, making the screen blurry whenever a desktop session is started and gdm loaded. Huawei have asked us to remove hibmc_drm from all architectures except arm64, and this aligns with advice from Hisilicon. [Fix] I modified the config/annotations file to remove all architectures except arm64, and created a patch for Kconfig to set a firm requirement on ARM64 for hibmc_drm. I will send the Kconfig patch upstream in the coming days for a more permanent fix. [Testcase] Apply the patches and run: ubuntu-bionic/CONFIGS$ fakeroot debian/rules genconfigs ubuntu-bionic/CONFIGS$ grep -Rin "hibmc" . ./arm64-config.flavour.generic:5739:CONFIG_DRM_HISI_HIBMC=m You should see that only arm64 has the config option enabled. A test kernel has been built, and is available here: https://launchpad.net/~mruffell/+archive/ubuntu/sf232667-test Huawei requested a test d-i install iso to test server install with, which can be found here and uses the kernel from the ppa above: https://people.canonical.com/~mruffell/sf232667_ubuntu_server_d-i_20190711b1.iso Both the test kernel and the custom d-i install iso have been tested on amd64 Huawei server hardware successfully and video output is functional. [Regression Potential] Regressions will be limited to hardware containing the iBMC chips from Hisilicon, which I believe are exclusive to Huawei servers. I have taken care to ensure that hibmc_drm is enabled for ARM64 so it should not impact kernels built for the Huawei D05 arm64 development board, and d-i will still load the hibmc_drm driver during startup for arm64. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
** Tags added: cscc -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers Status in linux package in Ubuntu: Fix Committed Status in linux source package in Bionic: Fix Committed Status in linux source package in Disco: Fix Committed Status in linux source package in Eoan: Fix Committed Bug description: BugLink: https://bugs.launchpad.net/bugs/1762940 [Impact] amd64 based Huawei servers have problems where the display output of their iBMC chips is broken, resulting in a "blurry" screen when viewed from their in house remote kvm-like console. Example: https://launchpadlibrarian.net/365907668/creen_picture_for_blur.png The issue is caused by the hibmc_drm kernel module being loaded. The PCI ID for the iBMC chips on amd64 hardware is the same as arm64 hardware, but the hibmc_drm driver was developed only for use on arm64 hardware, most notably for the Huawei D05 development board. The impact to Huawei is that their customers cannot use Ubuntu server install media as the screen goes "blurry" when the d-i install media or subuqity installer loads the hibmc_drm kernel module after language selection. The only workaround for their customers is to press the "E" key during the very first installer menu and adding "modprobe.blacklist=hibmc_drm" to the kernel command line in the grub menu. This is not good for customer experience with their servers. Other problems exist for the hibmc_drm driver on amd64, such as working on bios, but not uefi, and not being wayland compatible, making the screen blurry whenever a desktop session is started and gdm loaded. Huawei have asked us to remove hibmc_drm from all architectures except arm64, and this aligns with advice from Hisilicon. [Fix] I modified the config/annotations file to remove all architectures except arm64, and created a patch for Kconfig to set a firm requirement on ARM64 for hibmc_drm. I will send the Kconfig patch upstream in the coming days for a more permanent fix. [Testcase] Apply the patches and run: ubuntu-bionic/CONFIGS$ fakeroot debian/rules genconfigs ubuntu-bionic/CONFIGS$ grep -Rin "hibmc" . ./arm64-config.flavour.generic:5739:CONFIG_DRM_HISI_HIBMC=m You should see that only arm64 has the config option enabled. A test kernel has been built, and is available here: https://launchpad.net/~mruffell/+archive/ubuntu/sf232667-test Huawei requested a test d-i install iso to test server install with, which can be found here and uses the kernel from the ppa above: https://people.canonical.com/~mruffell/sf232667_ubuntu_server_d-i_20190711b1.iso Both the test kernel and the custom d-i install iso have been tested on amd64 Huawei server hardware successfully and video output is functional. [Regression Potential] Regressions will be limited to hardware containing the iBMC chips from Hisilicon, which I believe are exclusive to Huawei servers. I have taken care to ensure that hibmc_drm is enabled for ARM64 so it should not impact kernels built for the Huawei D05 arm64 development board, and d-i will still load the hibmc_drm driver during startup for arm64. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
** Changed in: linux (Ubuntu Bionic) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers Status in linux package in Ubuntu: Fix Committed Status in linux source package in Bionic: Fix Committed Status in linux source package in Disco: Fix Committed Status in linux source package in Eoan: Fix Committed Bug description: BugLink: https://bugs.launchpad.net/bugs/1762940 [Impact] amd64 based Huawei servers have problems where the display output of their iBMC chips is broken, resulting in a "blurry" screen when viewed from their in house remote kvm-like console. Example: https://launchpadlibrarian.net/365907668/creen_picture_for_blur.png The issue is caused by the hibmc_drm kernel module being loaded. The PCI ID for the iBMC chips on amd64 hardware is the same as arm64 hardware, but the hibmc_drm driver was developed only for use on arm64 hardware, most notably for the Huawei D05 development board. The impact to Huawei is that their customers cannot use Ubuntu server install media as the screen goes "blurry" when the d-i install media or subuqity installer loads the hibmc_drm kernel module after language selection. The only workaround for their customers is to press the "E" key during the very first installer menu and adding "modprobe.blacklist=hibmc_drm" to the kernel command line in the grub menu. This is not good for customer experience with their servers. Other problems exist for the hibmc_drm driver on amd64, such as working on bios, but not uefi, and not being wayland compatible, making the screen blurry whenever a desktop session is started and gdm loaded. Huawei have asked us to remove hibmc_drm from all architectures except arm64, and this aligns with advice from Hisilicon. [Fix] I modified the config/annotations file to remove all architectures except arm64, and created a patch for Kconfig to set a firm requirement on ARM64 for hibmc_drm. I will send the Kconfig patch upstream in the coming days for a more permanent fix. [Testcase] Apply the patches and run: ubuntu-bionic/CONFIGS$ fakeroot debian/rules genconfigs ubuntu-bionic/CONFIGS$ grep -Rin "hibmc" . ./arm64-config.flavour.generic:5739:CONFIG_DRM_HISI_HIBMC=m You should see that only arm64 has the config option enabled. A test kernel has been built, and is available here: https://launchpad.net/~mruffell/+archive/ubuntu/sf232667-test Huawei requested a test d-i install iso to test server install with, which can be found here and uses the kernel from the ppa above: https://people.canonical.com/~mruffell/sf232667_ubuntu_server_d-i_20190711b1.iso Both the test kernel and the custom d-i install iso have been tested on amd64 Huawei server hardware successfully and video output is functional. [Regression Potential] Regressions will be limited to hardware containing the iBMC chips from Hisilicon, which I believe are exclusive to Huawei servers. I have taken care to ensure that hibmc_drm is enabled for ARM64 so it should not impact kernels built for the Huawei D05 arm64 development board, and d-i will still load the hibmc_drm driver during startup for arm64. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
** Changed in: linux (Ubuntu Disco) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers Status in linux package in Ubuntu: Fix Committed Status in linux source package in Bionic: In Progress Status in linux source package in Disco: Fix Committed Status in linux source package in Eoan: Fix Committed Bug description: BugLink: https://bugs.launchpad.net/bugs/1762940 [Impact] amd64 based Huawei servers have problems where the display output of their iBMC chips is broken, resulting in a "blurry" screen when viewed from their in house remote kvm-like console. Example: https://launchpadlibrarian.net/365907668/creen_picture_for_blur.png The issue is caused by the hibmc_drm kernel module being loaded. The PCI ID for the iBMC chips on amd64 hardware is the same as arm64 hardware, but the hibmc_drm driver was developed only for use on arm64 hardware, most notably for the Huawei D05 development board. The impact to Huawei is that their customers cannot use Ubuntu server install media as the screen goes "blurry" when the d-i install media or subuqity installer loads the hibmc_drm kernel module after language selection. The only workaround for their customers is to press the "E" key during the very first installer menu and adding "modprobe.blacklist=hibmc_drm" to the kernel command line in the grub menu. This is not good for customer experience with their servers. Other problems exist for the hibmc_drm driver on amd64, such as working on bios, but not uefi, and not being wayland compatible, making the screen blurry whenever a desktop session is started and gdm loaded. Huawei have asked us to remove hibmc_drm from all architectures except arm64, and this aligns with advice from Hisilicon. [Fix] I modified the config/annotations file to remove all architectures except arm64, and created a patch for Kconfig to set a firm requirement on ARM64 for hibmc_drm. I will send the Kconfig patch upstream in the coming days for a more permanent fix. [Testcase] Apply the patches and run: ubuntu-bionic/CONFIGS$ fakeroot debian/rules genconfigs ubuntu-bionic/CONFIGS$ grep -Rin "hibmc" . ./arm64-config.flavour.generic:5739:CONFIG_DRM_HISI_HIBMC=m You should see that only arm64 has the config option enabled. A test kernel has been built, and is available here: https://launchpad.net/~mruffell/+archive/ubuntu/sf232667-test Huawei requested a test d-i install iso to test server install with, which can be found here and uses the kernel from the ppa above: https://people.canonical.com/~mruffell/sf232667_ubuntu_server_d-i_20190711b1.iso Both the test kernel and the custom d-i install iso have been tested on amd64 Huawei server hardware successfully and video output is functional. [Regression Potential] Regressions will be limited to hardware containing the iBMC chips from Hisilicon, which I believe are exclusive to Huawei servers. I have taken care to ensure that hibmc_drm is enabled for ARM64 so it should not impact kernels built for the Huawei D05 arm64 development board, and d-i will still load the hibmc_drm driver during startup for arm64. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
** Changed in: linux (Ubuntu Eoan) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers Status in linux package in Ubuntu: Fix Committed Status in linux source package in Bionic: In Progress Status in linux source package in Disco: In Progress Status in linux source package in Eoan: Fix Committed Bug description: BugLink: https://bugs.launchpad.net/bugs/1762940 [Impact] amd64 based Huawei servers have problems where the display output of their iBMC chips is broken, resulting in a "blurry" screen when viewed from their in house remote kvm-like console. Example: https://launchpadlibrarian.net/365907668/creen_picture_for_blur.png The issue is caused by the hibmc_drm kernel module being loaded. The PCI ID for the iBMC chips on amd64 hardware is the same as arm64 hardware, but the hibmc_drm driver was developed only for use on arm64 hardware, most notably for the Huawei D05 development board. The impact to Huawei is that their customers cannot use Ubuntu server install media as the screen goes "blurry" when the d-i install media or subuqity installer loads the hibmc_drm kernel module after language selection. The only workaround for their customers is to press the "E" key during the very first installer menu and adding "modprobe.blacklist=hibmc_drm" to the kernel command line in the grub menu. This is not good for customer experience with their servers. Other problems exist for the hibmc_drm driver on amd64, such as working on bios, but not uefi, and not being wayland compatible, making the screen blurry whenever a desktop session is started and gdm loaded. Huawei have asked us to remove hibmc_drm from all architectures except arm64, and this aligns with advice from Hisilicon. [Fix] I modified the config/annotations file to remove all architectures except arm64, and created a patch for Kconfig to set a firm requirement on ARM64 for hibmc_drm. I will send the Kconfig patch upstream in the coming days for a more permanent fix. [Testcase] Apply the patches and run: ubuntu-bionic/CONFIGS$ fakeroot debian/rules genconfigs ubuntu-bionic/CONFIGS$ grep -Rin "hibmc" . ./arm64-config.flavour.generic:5739:CONFIG_DRM_HISI_HIBMC=m You should see that only arm64 has the config option enabled. A test kernel has been built, and is available here: https://launchpad.net/~mruffell/+archive/ubuntu/sf232667-test Huawei requested a test d-i install iso to test server install with, which can be found here and uses the kernel from the ppa above: https://people.canonical.com/~mruffell/sf232667_ubuntu_server_d-i_20190711b1.iso Both the test kernel and the custom d-i install iso have been tested on amd64 Huawei server hardware successfully and video output is functional. [Regression Potential] Regressions will be limited to hardware containing the iBMC chips from Hisilicon, which I believe are exclusive to Huawei servers. I have taken care to ensure that hibmc_drm is enabled for ARM64 so it should not impact kernels built for the Huawei D05 arm64 development board, and d-i will still load the hibmc_drm driver during startup for arm64. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1762940] Re: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers
** Changed in: linux (Ubuntu Bionic) Status: Triaged => In Progress ** Changed in: linux (Ubuntu Disco) Status: Triaged => In Progress ** Changed in: linux (Ubuntu Eoan) Status: Triaged => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1762940 Title: hibmc-drm Causes Unreadable Display for Huawei amd64 Servers Status in linux package in Ubuntu: In Progress Status in linux source package in Bionic: In Progress Status in linux source package in Disco: In Progress Status in linux source package in Eoan: In Progress Bug description: BugLink: https://bugs.launchpad.net/bugs/1762940 [Impact] amd64 based Huawei servers have problems where the display output of their iBMC chips is broken, resulting in a "blurry" screen when viewed from their in house remote kvm-like console. Example: https://launchpadlibrarian.net/365907668/creen_picture_for_blur.png The issue is caused by the hibmc_drm kernel module being loaded. The PCI ID for the iBMC chips on amd64 hardware is the same as arm64 hardware, but the hibmc_drm driver was developed only for use on arm64 hardware, most notably for the Huawei D05 development board. The impact to Huawei is that their customers cannot use Ubuntu server install media as the screen goes "blurry" when the d-i install media or subuqity installer loads the hibmc_drm kernel module after language selection. The only workaround for their customers is to press the "E" key during the very first installer menu and adding "modprobe.blacklist=hibmc_drm" to the kernel command line in the grub menu. This is not good for customer experience with their servers. Other problems exist for the hibmc_drm driver on amd64, such as working on bios, but not uefi, and not being wayland compatible, making the screen blurry whenever a desktop session is started and gdm loaded. Huawei have asked us to remove hibmc_drm from all architectures except arm64, and this aligns with advice from Hisilicon. [Fix] I modified the config/annotations file to remove all architectures except arm64, and created a patch for Kconfig to set a firm requirement on ARM64 for hibmc_drm. I will send the Kconfig patch upstream in the coming days for a more permanent fix. [Testcase] Apply the patches and run: ubuntu-bionic/CONFIGS$ fakeroot debian/rules genconfigs ubuntu-bionic/CONFIGS$ grep -Rin "hibmc" . ./arm64-config.flavour.generic:5739:CONFIG_DRM_HISI_HIBMC=m You should see that only arm64 has the config option enabled. A test kernel has been built, and is available here: https://launchpad.net/~mruffell/+archive/ubuntu/sf232667-test Huawei requested a test d-i install iso to test server install with, which can be found here and uses the kernel from the ppa above: https://people.canonical.com/~mruffell/sf232667_ubuntu_server_d-i_20190711b1.iso Both the test kernel and the custom d-i install iso have been tested on amd64 Huawei server hardware successfully and video output is functional. [Regression Potential] Regressions will be limited to hardware containing the iBMC chips from Hisilicon, which I believe are exclusive to Huawei servers. I have taken care to ensure that hibmc_drm is enabled for ARM64 so it should not impact kernels built for the Huawei D05 arm64 development board, and d-i will still load the hibmc_drm driver during startup for arm64. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762940/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
