[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
** Tags removed: verification-needed-xenial ** Tags added: verification-done-xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
** Tags added: cscc -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
** Also affects: linux (Ubuntu Bionic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Bionic) Status: New => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
** Tags removed: verification-needed-bionic ** Tags added: verification-done-bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
** Tags added: verification-done-cosmic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
This bug was fixed in the package linux - 4.18.0-9.10
---
linux (4.18.0-9.10) cosmic; urgency=medium
* linux: 4.18.0-9.10 -proposed tracker (LP: #1796346)
* Cosmic update: v4.18.12 upstream stable release (LP: #1796139)
- crypto: skcipher - Fix -Wstringop-truncation warnings
- iio: adc: ina2xx: avoid kthread_stop() with stale task_struct
- tsl2550: fix lux1_input error in low light
- misc: ibmvmc: Use GFP_ATOMIC under spin lock
- vmci: type promotion bug in qp_host_get_user_memory()
- siox: don't create a thread without starting it
- x86/numa_emulation: Fix emulated-to-physical node mapping
- staging: rts5208: fix missing error check on call to rtsx_write_register
- power: supply: axp288_charger: Fix initial constant_charge_current value
- misc: sram: enable clock before registering regions
- serial: sh-sci: Stop RX FIFO timer during port shutdown
- uwb: hwa-rc: fix memory leak at probe
- power: vexpress: fix corruption in notifier registration
- iommu/amd: make sure TLB to be flushed before IOVA freed
- Bluetooth: Add a new Realtek 8723DE ID 0bda:b009
- USB: serial: kobil_sct: fix modem-status error handling
- 6lowpan: iphc: reset mac_header after decompress to fix panic
- iommu/msm: Don't call iommu_device_{,un}link from atomic context
- s390/mm: correct allocate_pgste proc_handler callback
- power: remove possible deadlock when unregistering power_supply
- drm/amd/display/dc/dce: Fix multiple potential integer overflows
- drm/amd/display: fix use of uninitialized memory
- md-cluster: clear another node's suspend_area after the copy is finished
- cxgb4: Fix the condition to check if the card is T5
- RDMA/bnxt_re: Fix a couple off by one bugs
- RDMA/i40w: Hold read semaphore while looking after VMA
- RDMA/bnxt_re: Fix a bunch of off by one bugs in qplib_fp.c
- IB/core: type promotion bug in rdma_rw_init_one_mr()
- media: exynos4-is: Prevent NULL pointer dereference in
__isp_video_try_fmt()
- IB/mlx4: Test port number before querying type.
- powerpc/kdump: Handle crashkernel memory reservation failure
- media: fsl-viu: fix error handling in viu_of_probe()
- vhost_net: Avoid tx vring kicks during busyloop
- media: staging/imx: fill vb2_v4l2_buffer field entry
- IB/mlx5: Fix GRE flow specification
- include/rdma/opa_addr.h: Fix an endianness issue
- x86/tsc: Add missing header to tsc_msr.c
- ARM: hwmod: RTC: Don't assume lock/unlock will be called with irq enabled
- x86/entry/64: Add two more instruction suffixes
- ARM: dts: ls1021a: Add missing cooling device properties for CPUs
- scsi: target/iscsi: Make iscsit_ta_authentication() respect the output
buffer size
- thermal: i.MX: Allow thermal probe to fail gracefully in case of bad
calibration.
- scsi: klist: Make it safe to use klists in atomic context
- scsi: ibmvscsi: Improve strings handling
- scsi: target: Avoid that EXTENDED COPY commands trigger lock inversion
- usb: wusbcore: security: cast sizeof to int for comparison
- ath10k: sdio: use same endpoint id for all packets in a bundle
- ath10k: sdio: set skb len for all rx packets
- powerpc/powernv/ioda2: Reduce upper limit for DMA window size
- platform/x86: asus-wireless: Fix uninitialized symbol usage
- ACPI / button: increment wakeup count only when notified
- s390/sysinfo: add missing #ifdef CONFIG_PROC_FS
- alarmtimer: Prevent overflow for relative nanosleep
- s390/dasd: correct numa_node in dasd_alloc_queue
- s390/scm_blk: correct numa_node in scm_blk_dev_setup
- s390/extmem: fix gcc 8 stringop-overflow warning
- mtd: rawnand: atmel: add module param to avoid using dma
- iio: accel: adxl345: convert address field usage in iio_chan_spec
- posix-timers: Make forward callback return s64
- posix-timers: Sanitize overrun handling
- ALSA: snd-aoa: add of_node_put() in error path
- selftests: forwarding: Tweak tc filters for mirror-to-gretap tests
- ath10k: use locked skb_dequeue for rx completions
- media: s3c-camif: ignore -ENOIOCTLCMD from v4l2_subdev_call for s_power
- media: soc_camera: ov772x: correct setting of banding filter
- media: omap3isp: zero-initialize the isp cam_xclk{a,b} initial data
- media: ov772x: add checks for register read errors
- staging: android: ashmem: Fix mmap size validation
- media: ov772x: allow i2c controllers without I2C_FUNC_PROTOCOL_MANGLING
- staging: mt7621-eth: Fix memory leak in mtk_add_mac() error path
- drivers/tty: add error handling for pcmcia_loop_config
- arm64: dts: renesas: salvator-common: Fix adv7482 decimal unit addresses
- serial: pxa: Fix an error handling path in 'serial_pxa_probe()'
- staging: mt7621-dts: Fix remaining pcie warnings
- media: tm6000: add error handling for dvb_register_adapter
- ASoC: qdsp6: qdafe:
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
** Changed in: linux (Ubuntu) Status: Confirmed => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
This should be fixed by next stable kernel update. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
https://lkml.org/lkml/2018/8/23/86 ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Kai-Heng Feng (kaihengfeng) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
It worked like a charm - there is no more banding issue. Thank you very much, Kai-Heng! Should this fix be checked on other versions of Ubuntu, just let me know. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
Please give this kernel a try: https://people.canonical.com/~khfeng/lp1788308/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
Hello Joseph, Thank you for your response. Unfortunately, installing and running the latest upstream kernel, version 4.18.4-041804.201808220230, did not solve my problem - the banding is still clearly visible, so I added an appropriate tag. ** Tags added: kernel-bug-exists-upstream ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.18 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.18.3 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Tags added: kernel-da-key -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
** Description changed: The problem affects the integrated display on a Lenovo B50-80 notebook. Colour banding is visible everywhere on the system, as dithering seems - not to be enabled. This issue was not present on non-HWE Ubuntu 16.04, - and it showed up after upgrading to Ubuntu 18.04. There was already a - bug #1749420 that was resolved - (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1749420) with very - similar symptoms, albeit the make and model of a LCD screen in that case - was different. However, the source of this problem is probably the same, + not to be enabled on this 6bpp display. This issue was not present on + non-HWE Ubuntu 16.04, and it showed up after I upgraded to Ubuntu 18.04. + There was already a very similar bug #1749420 that had a fix released, + however, because the make and model of an LCD screen in that case was + different, the quirk added to the kernel did not address the problem + that affects my machine. The cause of this issue is probably the same, since I have checked that pre-4.8.0-rc2 kernels handled dithering correctly, and 4.8.0-rc2 and later kernels already had the bug - described. Therefore, I believe that adding another quirk may fix the - problem. + described. I believe that adding quirk for an another type of display + may fix the problem. I attached the results of running sudo get-edid | parse-edid in a file named edid.txt and sudo get-edid | edid-decode in a file named edid-decoded.txt. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-32-generic 4.15.0-32.35 ProcVersionSignature: Ubuntu 4.15.0-32.35-generic 4.15.18 Uname: Linux 4.15.0-32-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 AudioDevicesInUse: - USERPID ACCESS COMMAND - /dev/snd/controlC0: me 1245 F pulseaudio - /dev/snd/controlC1: me 1245 F pulseaudio + USERPID ACCESS COMMAND + /dev/snd/controlC0: me 1245 F pulseaudio + /dev/snd/controlC1: me 1245 F pulseaudio Date: Wed Aug 22 00:26:15 2018 HibernationDevice: RESUME=UUID=93b28df5-b453-452b-960d-7173994d778e InstallationDate: Installed on 2018-08-21 (0 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) MachineType: LENOVO 80EW ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-32-generic root=UUID=a1cd5b8c-2707-4840-858b-3ca12517193b ro quiet splash vt.handoff=1 PulseList: - Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied - No PulseAudio daemon running, or not running as session daemon. + Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied + No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: - linux-restricted-modules-4.15.0-32-generic N/A - linux-backports-modules-4.15.0-32-generic N/A - linux-firmware 1.173.1 + linux-restricted-modules-4.15.0-32-generic N/A + linux-backports-modules-4.15.0-32-generic N/A + linux-firmware 1.173.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/02/2016 dmi.bios.vendor: LENOVO dmi.bios.version: A8CN54WW(V3.07) dmi.board.asset.tag: NO Asset Tag dmi.board.name: Lenovo B50-80 dmi.board.vendor: LENOVO dmi.board.version: 31900058 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo B50-80 dmi.modalias: dmi:bvnLENOVO:bvrA8CN54WW(V3.07):bd09/02/2016:svnLENOVO:pn80EW:pvrLenovoB50-80:rvnLENOVO:rnLenovoB50-80:rvr31900058WIN:cvnLENOVO:ct10:cvrLenovoB50-80: dmi.product.family: IDEAPAD dmi.product.name: 80EW dmi.product.version: Lenovo B50-80 dmi.sys.vendor: LENOVO -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
** Attachment added: "version.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+attachment/5178920/+files/version.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
** Attachment added: "edid-decoded.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+attachment/5178918/+files/edid-decoded.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
** Attachment added: "lspci-vnvn.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+attachment/5178919/+files/lspci-vnvn.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1788308] Re: [Regression] Colour banding appears on Lenovo B50-80 integrated display
** Attachment added: "edid.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+attachment/5178917/+files/edid.txt ** Attachment removed: "edid-decoded.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+attachment/5178901/+files/edid-decoded.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788308 Title: [Regression] Colour banding appears on Lenovo B50-80 integrated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
