[Kernel-packages] [Bug 1396654] Re: C++ demangling support missing from perf
Hmm, apparently /usr/bin/perf is only a wrapper script that runs the "right" version of the perf executable for the current kernel. But the perf executable (typically inside /usr/lib/linux-tools-VERSION) is part of the "linux-tools-VERSION" package. So if I do: $ sudo apt install linux-tools-4.15.0-47/bionic-proposed and then run /usr/lib/linux-tools-4.15.0-47/perf directly, instead of the wrapper script which will still run the perf version for the LTS kernel, things finally work here. -- 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/1396654 Title: C++ demangling support missing from perf Status in linux package in Ubuntu: Triaged Status in linux-hwe package in Ubuntu: Confirmed Status in linux source package in Xenial: Fix Committed Status in linux-hwe source package in Xenial: Fix Committed Status in linux source package in Yakkety: Won't Fix Status in linux source package in Zesty: Fix Released Status in linux source package in Bionic: Fix Committed Status in linux-hwe source package in Bionic: Fix Committed Status in linux source package in Cosmic: Fix Committed Status in linux-hwe source package in Cosmic: Confirmed Status in linux source package in Disco: Triaged Status in linux-hwe source package in Disco: Confirmed Bug description: Hi, It appears that C++ demangling support is missing from linux-tools-3.16.0-24, on Utopic on arm64. Could the following please be added to the build dependencies for that package: libiberty-dev binutils-dev Installing the above and rebuilding the package fixed the problem for me. Cheers, -- Steve --- AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.14.7-0ubuntu8 Architecture: arm64 ArecordDevices: Error: [Errno 2] No such file or directory CRDA: Error: [Errno 2] No such file or directory CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied DistroRelease: Ubuntu 14.10 IwConfig: Error: [Errno 2] No such file or directory Lspci: Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99 Package: linux (not installed) PciMultimedia: ProcFB: ProcKernelCmdLine: console=ttyS0,115200n8 ro ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4 RfKill: Error: [Errno 2] No such file or directory Tags: utopic utopic Uname: Linux 3.16.0-24-generic aarch64 UnreportableReason: The report belongs to a package that is not installed. UpgradeStatus: Upgraded to utopic on 2014-11-17 (9 days ago) UserGroups: sudo WifiSyslog: _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1396654/+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 1396654] Re: C++ demangling support missing from perf
I've installed linux-tools-common 4.15.0-47.50 from bionic-proposed and checked that the new /usr/bin/perf binary still doesn't demangle C++ symbols (even when "perf report --demangle" is passed explicitly). ** Tags removed: verification-needed-bionic ** Tags added: verification-failed-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/1396654 Title: C++ demangling support missing from perf Status in linux package in Ubuntu: Triaged Status in linux-hwe package in Ubuntu: Confirmed Status in linux source package in Xenial: Fix Committed Status in linux-hwe source package in Xenial: Fix Committed Status in linux source package in Yakkety: Won't Fix Status in linux source package in Zesty: Fix Released Status in linux source package in Bionic: Fix Committed Status in linux-hwe source package in Bionic: Fix Committed Status in linux source package in Cosmic: Fix Committed Status in linux-hwe source package in Cosmic: Confirmed Status in linux source package in Disco: Triaged Status in linux-hwe source package in Disco: Confirmed Bug description: Hi, It appears that C++ demangling support is missing from linux-tools-3.16.0-24, on Utopic on arm64. Could the following please be added to the build dependencies for that package: libiberty-dev binutils-dev Installing the above and rebuilding the package fixed the problem for me. Cheers, -- Steve --- AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.14.7-0ubuntu8 Architecture: arm64 ArecordDevices: Error: [Errno 2] No such file or directory CRDA: Error: [Errno 2] No such file or directory CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied DistroRelease: Ubuntu 14.10 IwConfig: Error: [Errno 2] No such file or directory Lspci: Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99 Package: linux (not installed) PciMultimedia: ProcFB: ProcKernelCmdLine: console=ttyS0,115200n8 ro ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4 RfKill: Error: [Errno 2] No such file or directory Tags: utopic utopic Uname: Linux 3.16.0-24-generic aarch64 UnreportableReason: The report belongs to a package that is not installed. UpgradeStatus: Upgraded to utopic on 2014-11-17 (9 days ago) UserGroups: sudo WifiSyslog: _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1396654/+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 1396654] Re: C++ demangling support missing from perf
Note that `perf` can crash when demangling. The (trivial) patch shown below fixes the issue for me: http://lkml.iu.edu/hypermail/linux/kernel/1810.2/02663.html Related libbfd issue for incorrect demangling: https://sourceware.org/bugzilla/show_bug.cgi?id=23715 ** Bug watch added: Sourceware.org Bugzilla #23715 https://sourceware.org/bugzilla/show_bug.cgi?id=23715 -- 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/1396654 Title: C++ demangling support missing from perf Status in linux package in Ubuntu: Triaged Status in linux-hwe package in Ubuntu: Confirmed Status in linux source package in Xenial: Incomplete Status in linux-hwe source package in Xenial: Confirmed Status in linux source package in Yakkety: Won't Fix Status in linux source package in Zesty: Fix Released Status in linux source package in Bionic: Confirmed Status in linux-hwe source package in Bionic: Confirmed Status in linux source package in Cosmic: Confirmed Status in linux-hwe source package in Cosmic: Confirmed Status in linux source package in Disco: Triaged Status in linux-hwe source package in Disco: Confirmed Bug description: Hi, It appears that C++ demangling support is missing from linux-tools-3.16.0-24, on Utopic on arm64. Could the following please be added to the build dependencies for that package: libiberty-dev binutils-dev Installing the above and rebuilding the package fixed the problem for me. Cheers, -- Steve --- AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.14.7-0ubuntu8 Architecture: arm64 ArecordDevices: Error: [Errno 2] No such file or directory CRDA: Error: [Errno 2] No such file or directory CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied DistroRelease: Ubuntu 14.10 IwConfig: Error: [Errno 2] No such file or directory Lspci: Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99 Package: linux (not installed) PciMultimedia: ProcFB: ProcKernelCmdLine: console=ttyS0,115200n8 ro ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4 RfKill: Error: [Errno 2] No such file or directory Tags: utopic utopic Uname: Linux 3.16.0-24-generic aarch64 UnreportableReason: The report belongs to a package that is not installed. UpgradeStatus: Upgraded to utopic on 2014-11-17 (9 days ago) UserGroups: sudo WifiSyslog: _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1396654/+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 1396654] Re: C++ demangling support missing from perf
As #18 pointed out, this still affects 18.04. Could the fix be ported there? -- 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/1396654 Title: C++ demangling support missing from perf Status in linux package in Ubuntu: Fix Released Status in linux-meta-hwe package in Ubuntu: Confirmed Status in linux source package in Xenial: Incomplete Status in linux-meta-hwe source package in Xenial: Confirmed Status in linux source package in Yakkety: Won't Fix Status in linux source package in Zesty: Fix Released Bug description: Hi, It appears that C++ demangling support is missing from linux-tools-3.16.0-24, on Utopic on arm64. Could the following please be added to the build dependencies for that package: libiberty-dev binutils-dev Installing the above and rebuilding the package fixed the problem for me. Cheers, -- Steve --- AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.14.7-0ubuntu8 Architecture: arm64 ArecordDevices: Error: [Errno 2] No such file or directory CRDA: Error: [Errno 2] No such file or directory CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied DistroRelease: Ubuntu 14.10 IwConfig: Error: [Errno 2] No such file or directory Lspci: Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99 Package: linux (not installed) PciMultimedia: ProcFB: ProcKernelCmdLine: console=ttyS0,115200n8 ro ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4 RfKill: Error: [Errno 2] No such file or directory Tags: utopic utopic Uname: Linux 3.16.0-24-generic aarch64 UnreportableReason: The report belongs to a package that is not installed. UpgradeStatus: Upgraded to utopic on 2014-11-17 (9 days ago) UserGroups: sudo WifiSyslog: _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1396654/+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 1690085] Re: Ryzen 1800X freeze - rcu_sched detected stalls on CPUs/tasks
This bug still occurs for me with 4.15.0-32-generic (Ubuntu 18.04.1) if I don't disable C6 states. -- 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/1690085 Title: Ryzen 1800X freeze - rcu_sched detected stalls on CPUs/tasks Status in Linux: Confirmed Status in linux package in Ubuntu: Confirmed Bug description: Hi, We aregetting various kernel crash on a pretty new config. We're using Ryzen 1800X CPU with X370 Gaming Pro Carbon MB (7A32V1) using latest BIOS available (1.52) We are running Ubuntu 17.04 (amd64), we've tried different kernel version, native one and releases from http://kernel.ubuntu.com/~kernel-ppa/mainline/ too. Tested kernel version: native 17.04 kernel 4.10.15 Issues are the same, we're getting random freeze on the machine. Here is kern.log entry when happening : May 10 22:41:56 dev2 kernel: [24366.186246] INFO: rcu_sched detected stalls on CPUs/tasks: May 10 22:41:56 dev2 kernel: [24366.187618] 0-...: (1 GPs behind) idle=49b/1/0 softirq=28561/28563 fqs=913449 May 10 22:41:56 dev2 kernel: [24366.188977] (detected by 12, t=1860207 jiffies, g=10001, c=1, q=4656) May 10 22:41:56 dev2 kernel: [24366.190344] Task dump for CPU 0: May 10 22:41:56 dev2 kernel: [24366.190345] swapper/0 R running task 0 0 0 0x0008 May 10 22:41:56 dev2 kernel: [24366.190348] Call Trace: May 10 22:41:56 dev2 kernel: [24366.190354] ? native_safe_halt+0x6/0x10 May 10 22:41:56 dev2 kernel: [24366.190355] ? default_idle+0x20/0xd0 May 10 22:41:56 dev2 kernel: [24366.190358] ? arch_cpu_idle+0xf/0x20 May 10 22:41:56 dev2 kernel: [24366.190360] ? default_idle_call+0x23/0x30 May 10 22:41:56 dev2 kernel: [24366.190362] ? do_idle+0x16f/0x200 May 10 22:41:56 dev2 kernel: [24366.190364] ? cpu_startup_entry+0x71/0x80 May 10 22:41:56 dev2 kernel: [24366.190366] ? rest_init+0x77/0x80 May 10 22:41:56 dev2 kernel: [24366.190368] ? start_kernel+0x464/0x485 May 10 22:41:56 dev2 kernel: [24366.190369] ? early_idt_handler_array+0x120/0x120 May 10 22:41:56 dev2 kernel: [24366.190371] ? x86_64_start_reservations+0x24/0x26 May 10 22:41:56 dev2 kernel: [24366.190372] ? x86_64_start_kernel+0x14d/0x170 May 10 22:41:56 dev2 kernel: [24366.190373] ? start_cpu+0x14/0x14 May 10 22:44:56 dev2 kernel: [24546.188093] INFO: rcu_sched detected stalls on CPUs/tasks: May 10 22:44:56 dev2 kernel: [24546.189461] 0-...: (1 GPs behind) idle=49b/1/0 softirq=28561/28563 fqs=935027 May 10 22:44:56 dev2 kernel: [24546.190823] (detected by 14, t=1905212 jiffies, g=10001, c=1, q=4740) May 10 22:44:56 dev2 kernel: [24546.192191] Task dump for CPU 0: May 10 22:44:56 dev2 kernel: [24546.192192] swapper/0 R running task 0 0 0 0x0008 May 10 22:44:56 dev2 kernel: [24546.192195] Call Trace: May 10 22:44:56 dev2 kernel: [24546.192199] ? native_safe_halt+0x6/0x10 May 10 22:44:56 dev2 kernel: [24546.192201] ? default_idle+0x20/0xd0 May 10 22:44:56 dev2 kernel: [24546.192203] ? arch_cpu_idle+0xf/0x20 May 10 22:44:56 dev2 kernel: [24546.192204] ? default_idle_call+0x23/0x30 May 10 22:44:56 dev2 kernel: [24546.192206] ? do_idle+0x16f/0x200 May 10 22:44:56 dev2 kernel: [24546.192208] ? cpu_startup_entry+0x71/0x80 May 10 22:44:56 dev2 kernel: [24546.192210] ? rest_init+0x77/0x80 May 10 22:44:56 dev2 kernel: [24546.192211] ? start_kernel+0x464/0x485 May 10 22:44:56 dev2 kernel: [24546.192213] ? early_idt_handler_array+0x120/0x120 May 10 22:44:56 dev2 kernel: [24546.192214] ? x86_64_start_reservations+0x24/0x26 May 10 22:44:56 dev2 kernel: [24546.192215] ? x86_64_start_kernel+0x14d/0x170 May 10 22:44:56 dev2 kernel: [24546.192217] ? start_cpu+0x14/0x14 Depending on the kernel version, we've got NMI watchdog errors related to CPU stuck (mentioning the CPU core id, which is random). Crash is happening randomly, but in general after some hours (3-4h). Now, we've installed kernel 4.11.0-041100-generic #201705041534 this morning and waiting for crash... For now, the machine is not "used", at least, it's not CPU stressed... Thanks --- ApportVersion: 2.20.4-0ubuntu4 Architecture: amd64 DistroRelease: Ubuntu 17.04 InstallationDate: Installed on 2017-05-09 (1 days ago) InstallationMedia: Ubuntu-Server 17.04 "Zesty Zapus" - Release amd64 (20170412) Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR= LANG=fr_FR.UTF-8 SHELL=/bin/bash Tags: zesty Uname: Linux 4.11.0-041100-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1690085/+subscriptions
[Kernel-packages] [Bug 1690085] Re: Ryzen 1800X freeze - rcu_sched detected stalls on CPUs/tasks
According at least to http://blog.programster.org/stabilizing- ubuntu-16-04-on-ryzen, 18.04 is supposed to be ok. I haven't upgraded yet myself. -- 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/1690085 Title: Ryzen 1800X freeze - rcu_sched detected stalls on CPUs/tasks Status in Linux: Unknown Status in linux package in Ubuntu: Confirmed Bug description: Hi, We aregetting various kernel crash on a pretty new config. We're using Ryzen 1800X CPU with X370 Gaming Pro Carbon MB (7A32V1) using latest BIOS available (1.52) We are running Ubuntu 17.04 (amd64), we've tried different kernel version, native one and releases from http://kernel.ubuntu.com/~kernel-ppa/mainline/ too. Tested kernel version: native 17.04 kernel 4.10.15 Issues are the same, we're getting random freeze on the machine. Here is kern.log entry when happening : May 10 22:41:56 dev2 kernel: [24366.186246] INFO: rcu_sched detected stalls on CPUs/tasks: May 10 22:41:56 dev2 kernel: [24366.187618] 0-...: (1 GPs behind) idle=49b/1/0 softirq=28561/28563 fqs=913449 May 10 22:41:56 dev2 kernel: [24366.188977] (detected by 12, t=1860207 jiffies, g=10001, c=1, q=4656) May 10 22:41:56 dev2 kernel: [24366.190344] Task dump for CPU 0: May 10 22:41:56 dev2 kernel: [24366.190345] swapper/0 R running task 0 0 0 0x0008 May 10 22:41:56 dev2 kernel: [24366.190348] Call Trace: May 10 22:41:56 dev2 kernel: [24366.190354] ? native_safe_halt+0x6/0x10 May 10 22:41:56 dev2 kernel: [24366.190355] ? default_idle+0x20/0xd0 May 10 22:41:56 dev2 kernel: [24366.190358] ? arch_cpu_idle+0xf/0x20 May 10 22:41:56 dev2 kernel: [24366.190360] ? default_idle_call+0x23/0x30 May 10 22:41:56 dev2 kernel: [24366.190362] ? do_idle+0x16f/0x200 May 10 22:41:56 dev2 kernel: [24366.190364] ? cpu_startup_entry+0x71/0x80 May 10 22:41:56 dev2 kernel: [24366.190366] ? rest_init+0x77/0x80 May 10 22:41:56 dev2 kernel: [24366.190368] ? start_kernel+0x464/0x485 May 10 22:41:56 dev2 kernel: [24366.190369] ? early_idt_handler_array+0x120/0x120 May 10 22:41:56 dev2 kernel: [24366.190371] ? x86_64_start_reservations+0x24/0x26 May 10 22:41:56 dev2 kernel: [24366.190372] ? x86_64_start_kernel+0x14d/0x170 May 10 22:41:56 dev2 kernel: [24366.190373] ? start_cpu+0x14/0x14 May 10 22:44:56 dev2 kernel: [24546.188093] INFO: rcu_sched detected stalls on CPUs/tasks: May 10 22:44:56 dev2 kernel: [24546.189461] 0-...: (1 GPs behind) idle=49b/1/0 softirq=28561/28563 fqs=935027 May 10 22:44:56 dev2 kernel: [24546.190823] (detected by 14, t=1905212 jiffies, g=10001, c=1, q=4740) May 10 22:44:56 dev2 kernel: [24546.192191] Task dump for CPU 0: May 10 22:44:56 dev2 kernel: [24546.192192] swapper/0 R running task 0 0 0 0x0008 May 10 22:44:56 dev2 kernel: [24546.192195] Call Trace: May 10 22:44:56 dev2 kernel: [24546.192199] ? native_safe_halt+0x6/0x10 May 10 22:44:56 dev2 kernel: [24546.192201] ? default_idle+0x20/0xd0 May 10 22:44:56 dev2 kernel: [24546.192203] ? arch_cpu_idle+0xf/0x20 May 10 22:44:56 dev2 kernel: [24546.192204] ? default_idle_call+0x23/0x30 May 10 22:44:56 dev2 kernel: [24546.192206] ? do_idle+0x16f/0x200 May 10 22:44:56 dev2 kernel: [24546.192208] ? cpu_startup_entry+0x71/0x80 May 10 22:44:56 dev2 kernel: [24546.192210] ? rest_init+0x77/0x80 May 10 22:44:56 dev2 kernel: [24546.192211] ? start_kernel+0x464/0x485 May 10 22:44:56 dev2 kernel: [24546.192213] ? early_idt_handler_array+0x120/0x120 May 10 22:44:56 dev2 kernel: [24546.192214] ? x86_64_start_reservations+0x24/0x26 May 10 22:44:56 dev2 kernel: [24546.192215] ? x86_64_start_kernel+0x14d/0x170 May 10 22:44:56 dev2 kernel: [24546.192217] ? start_cpu+0x14/0x14 Depending on the kernel version, we've got NMI watchdog errors related to CPU stuck (mentioning the CPU core id, which is random). Crash is happening randomly, but in general after some hours (3-4h). Now, we've installed kernel 4.11.0-041100-generic #201705041534 this morning and waiting for crash... For now, the machine is not "used", at least, it's not CPU stressed... Thanks --- ApportVersion: 2.20.4-0ubuntu4 Architecture: amd64 DistroRelease: Ubuntu 17.04 InstallationDate: Installed on 2017-05-09 (1 days ago) InstallationMedia: Ubuntu-Server 17.04 "Zesty Zapus" - Release amd64 (20170412) Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR= LANG=fr_FR.UTF-8 SHELL=/bin/bash Tags: zesty Uname: Linux 4.11.0-041100-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True To manage notifications about this bug go to:
[Kernel-packages] [Bug 1492764] Re: [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0)
I got this issue after trying to install the nvidia-352 driver on my laptop (an optimus setup with both an Intel iGPU and a NVidia GPU). I then uninstalled the NVidia driver, but it still doesn't fix the problem, which is mysterious. -- 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/1492764 Title: [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) Status in Linux: Fix Released Status in linux package in Ubuntu: Incomplete Bug description: System: Kubuntu 15.10 Since kernel version 4.2 I have a few of this errors: Sep 06 16:16:35 benediktZ50-70 kernel: [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) Sep 06 16:16:35 benediktZ50-70 kernel: [ cut here ] Sep 06 16:16:35 benediktZ50-70 kernel: WARNING: CPU: 0 PID: 187 at /build/linux-4dBub_/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12324 check_crtc_state+0x2c5/0x440 [i915]() Sep 06 16:16:35 benediktZ50-70 kernel: pipe state doesn't match! Sep 06 16:16:35 benediktZ50-70 kernel: Modules linked in: rtsx_usb_sdmmc rtsx_usb i915 i2c_algo_bit drm_kms_helper psmouse ahci drm libahci r8169 mii sdhci_acpi video sdhci i2c_hid hid Sep 06 16:16:35 benediktZ50-70 kernel: CPU: 0 PID: 187 Comm: plymouthd Tainted: GW 4.2.0-7-generic #7-Ubuntu Sep 06 16:16:35 benediktZ50-70 kernel: Hardware name: LENOVO 20354/Lancer 5A5, BIOS 9BCN91WW 07/21/2015 Sep 06 16:16:35 benediktZ50-70 kernel: c023f1e8 8802413277e8 817b0465 Sep 06 16:16:35 benediktZ50-70 kernel: 880241327838 880241327828 81076536 880241327858 Sep 06 16:16:35 benediktZ50-70 kernel: 8802413278c0 880241152000 0001 880241152350 Sep 06 16:16:35 benediktZ50-70 kernel: Call Trace: Sep 06 16:16:35 benediktZ50-70 kernel: [] dump_stack+0x45/0x57 Sep 06 16:16:35 benediktZ50-70 kernel: [] warn_slowpath_common+0x86/0xc0 Sep 06 16:16:35 benediktZ50-70 kernel: [] warn_slowpath_fmt+0x46/0x50 Sep 06 16:16:35 benediktZ50-70 kernel: [] ? intel_pipe_config_compare+0xb31/0xc60 [i915] Sep 06 16:16:35 benediktZ50-70 kernel: [] check_crtc_state+0x2c5/0x440 [i915] Sep 06 16:16:35 benediktZ50-70 kernel: [] intel_modeset_check_state+0x20e/0x6b0 [i915] Sep 06 16:16:35 benediktZ50-70 kernel: [] intel_crtc_set_config+0x4c7/0x580 [i915] Sep 06 16:16:35 benediktZ50-70 kernel: [] ? drm_mode_create+0x25/0x60 [drm] Sep 06 16:16:35 benediktZ50-70 kernel: [] drm_mode_set_config_internal+0x66/0x100 [drm] Sep 06 16:16:35 benediktZ50-70 kernel: [] drm_mode_setcrtc+0x3a8/0x4c0 [drm] Sep 06 16:16:35 benediktZ50-70 kernel: [] drm_ioctl+0x125/0x610 [drm] Sep 06 16:16:35 benediktZ50-70 kernel: [] ? drm_mode_setplane+0x1b0/0x1b0 [drm] Sep 06 16:16:35 benediktZ50-70 kernel: [] do_vfs_ioctl+0x285/0x470 Sep 06 16:16:35 benediktZ50-70 kernel: [] ? do_munmap+0x349/0x480 Sep 06 16:16:35 benediktZ50-70 kernel: [] SyS_ioctl+0x79/0x90 Sep 06 16:16:35 benediktZ50-70 kernel: [] entry_SYSCALL_64_fastpath+0x16/0x75 Sep 06 16:16:35 benediktZ50-70 kernel: ---[ end trace 724377a3c01e4270 ]--- I will check next week if these errors have any impact on my system. This is a Nvidia Optimus System with the Intel graphic card activated by default. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-7-generic 4.2.0-7.7 ProcVersionSignature: Ubuntu 4.2.0-7.7-generic 4.2.0 Uname: Linux 4.2.0-7-generic x86_64 ApportVersion: 2.18-0ubuntu9 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: benedikt 1550 F pulseaudio /dev/snd/controlC1: benedikt 1550 F pulseaudio CurrentDesktop: KDE Date: Sun Sep 6 16:22:48 2015 HibernationDevice: UUID=3383b02e-b89c-462c-903a-cb936e81b2bf InstallationDate: Installed on 2014-12-21 (259 days ago) InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141218) MachineType: LENOVO 20354 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-7-generic root=UUID=b549945a-67ac-4d14-849c-b54e561d47cc ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.2.0-7-generic N/A linux-backports-modules-4.2.0-7-generic N/A linux-firmware 1.147 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/21/2015 dmi.bios.vendor: LENOVO dmi.bios.version: 9BCN91WW dmi.board.asset.tag: No Asset Tag dmi.board.name: Lancer 5A5 dmi.board.vendor: LENOVO dmi.board.version: 31900058WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Z50-70 dmi.modalias:
