Activity log for bug #1597267

Date Who What changed Old value New value Message
2016-06-29 10:23:07 Tero Marttila bug added bug
2016-06-29 10:23:07 Tero Marttila attachment added ubuntu1604-linux44-dp1.log https://bugs.launchpad.net/bugs/1597267/+attachment/4692147/+files/ubuntu1604-linux44-dp1.log
2016-06-29 10:30:20 Brad Figg linux (Ubuntu): status New Confirmed
2016-06-29 15:29:39 Joseph Salisbury linux (Ubuntu): importance Undecided High
2016-06-29 15:29:50 Joseph Salisbury linux (Ubuntu): status Confirmed Incomplete
2016-06-29 16:25:38 Tero Marttila tags amd64 apport-bug xenial amd64 apport-bug kernel-bug-exists-upstream xenial
2016-06-29 16:27:44 Tero Marttila linux (Ubuntu): status Incomplete Confirmed
2016-06-29 16:34:18 Tero Marttila description Running Ubuntu 16.04 on a Lenovo ThinkPad X260 with Intel Skylake HD Graphics 520, connecting an external monitor to the DisplayPort connector causes the system to quickly hang. The system stops responding to network pings, cannot switch consoles, and needs a hard reboot. The external monitor does work when using a text console, and does not always hang in the LightDM login screen, but starting up a desktop session will always hang. This originally happened using a ThinkPad dock, and I tested it further using an external DP monitor. This happens on 4.4.0-28-generic as well as mainline 4.6.3-040603-generic and 4.7.0-040700rc5-generic; they all hang in a similar fashion. I have attached a journalctl log from running 4.4.0-28-generic and connecting the DP monitor while in a text console, before switching to the graphical console and logging in. The system hangs after a series of: kernel: WARNING: CPU: 3 PID: 2319 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_pm.c:3647 skl_update_other_pipe_wm+0x15d/0x170 [i915] 2016-06-29T12:54:52+0300 tehobari kernel: WARNING: CPU: 3 PID: 4418 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_display.c:13957 skl_max_scale.part.108+0x69/0x70 [i915] kernel: [drm:gen8_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun The first warnings come immediately when connecting, and others when switching consoles and logging in. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-28-generic 4.4.0-28.47 ProcVersionSignature: Ubuntu 4.4.0-28.47-generic 4.4.13 Uname: Linux 4.4.0-28-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: terom 1903 F.... pulseaudio CurrentDesktop: Unity Date: Wed Jun 29 13:03:18 2016 InstallationDate: Installed on 2016-06-26 (2 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: LENOVO 20F6007RGE ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-28-generic root=UUID=6636a3bb-262e-4ab2-ae81-d9388e3f7684 ro rootflags=subvol=@ quiet splash RelatedPackageVersions: linux-restricted-modules-4.4.0-28-generic N/A linux-backports-modules-4.4.0-28-generic N/A linux-firmware 1.157.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/01/2016 dmi.bios.vendor: LENOVO dmi.bios.version: R02ET48W (1.21 ) dmi.board.asset.tag: Not Available dmi.board.name: 20F6007RGE dmi.board.vendor: LENOVO dmi.board.version: SDK0J40705 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrR02ET48W(1.21):bd06/01/2016:svnLENOVO:pn20F6007RGE:pvrThinkPadX260:rvnLENOVO:rn20F6007RGE:rvrSDK0J40705WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20F6007RGE dmi.product.version: ThinkPad X260 dmi.sys.vendor: LENOVO Running Ubuntu 16.04 on a Lenovo ThinkPad X260 with Intel Skylake HD Graphics 520, connecting an external monitor to the DisplayPort connector causes the system to quickly hang. The system stops responding to network pings, cannot switch consoles, and needs a hard reboot. The external monitor does work when using a text console, and does not always hang in the LightDM login screen, but starting up a desktop session will always hang. This originally happened using a ThinkPad dock, and I tested it further using an external DP monitor. This happens on 4.4.0-28-generic as well as mainline 4.6.3-040603-generic and 4.7.0-040700rc5-generic; they all hang in a similar fashion. I have attached a journalctl log from running 4.7.0-040700rc5-generic and connecting the DP monitor while in a text console, before switching to the graphical console and logging in. The system hangs after a series of: kernel: WARNING: CPU: 3 PID: 2319 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_pm.c:3647 skl_update_other_pipe_wm+0x15d/0x170 [i915] kernel: WARNING: CPU: 3 PID: 4418 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_display.c:13957 skl_max_scale.part.108+0x69/0x70 [i915] kernel: [drm:gen8_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun The first warnings come immediately when connecting, and others when switching consoles and logging in. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-28-generic 4.4.0-28.47 ProcVersionSignature: Ubuntu 4.4.0-28.47-generic 4.4.13 Uname: Linux 4.4.0-28-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: terom 1903 F.... pulseaudio CurrentDesktop: Unity Date: Wed Jun 29 13:03:18 2016 InstallationDate: Installed on 2016-06-26 (2 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: LENOVO 20F6007RGE ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-28-generic root=UUID=6636a3bb-262e-4ab2-ae81-d9388e3f7684 ro rootflags=subvol=@ quiet splash RelatedPackageVersions: linux-restricted-modules-4.4.0-28-generic N/A linux-backports-modules-4.4.0-28-generic N/A linux-firmware 1.157.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/01/2016 dmi.bios.vendor: LENOVO dmi.bios.version: R02ET48W (1.21 ) dmi.board.asset.tag: Not Available dmi.board.name: 20F6007RGE dmi.board.vendor: LENOVO dmi.board.version: SDK0J40705 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrR02ET48W(1.21):bd06/01/2016:svnLENOVO:pn20F6007RGE:pvrThinkPadX260:rvnLENOVO:rn20F6007RGE:rvrSDK0J40705WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20F6007RGE dmi.product.version: ThinkPad X260 dmi.sys.vendor: LENOVO
2016-07-03 16:03:25 penalvch tags amd64 apport-bug kernel-bug-exists-upstream xenial amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-4.7-rc5 latest-bios-1.21 xenial
2016-07-03 16:04:43 penalvch linux (Ubuntu): status Confirmed Incomplete
2016-07-06 07:48:45 Tero Marttila attachment added Linux version 4.7.0-994-generic (kernel@tangerine) (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1) ) #201607052202 SMP Wed Jul 6 02:04:37 UTC 2016 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1597267/+attachment/4696230/+files/ubuntu1604-linux47drm994-dp.dmesg
2016-07-06 08:22:04 penalvch tags amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-4.7-rc5 latest-bios-1.21 xenial amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-4.7-rc6 latest-bios-1.21 xenial
2016-07-06 08:58:11 penalvch linux (Ubuntu): status Incomplete Triaged
2016-07-06 09:33:12 Tero Marttila bug watch added https://bugs.freedesktop.org/show_bug.cgi?id=96714
2016-07-06 09:33:12 Tero Marttila bug watch added https://bugs.freedesktop.org/show_bug.cgi?id=95498
2016-07-06 09:33:12 Tero Marttila bug watch added https://bugs.freedesktop.org/show_bug.cgi?id=94822
2016-07-06 09:33:12 Tero Marttila bug watch added https://bugs.freedesktop.org/show_bug.cgi?id=89055
2016-10-12 14:26:41 Thomas Morin bug added subscriber Thomas Morin
2016-12-30 18:40:10 penalvch linux (Ubuntu): status Triaged Incomplete
2016-12-30 18:41:37 penalvch tags amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-4.7-rc6 latest-bios-1.21 xenial amd64 apport-bug kernel-bug-exists-upstream-4.7-rc6 latest-bios-1.21 needs-upstream-testing xenial
2017-02-20 14:57:55 Daniel bug added subscriber Daniel
2017-03-21 18:38:31 Florian Stoll bug added subscriber Schmankerl
2017-12-28 10:23:19 Jhonny attachment added kernelpanic.png https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1597267/+attachment/5028365/+files/kernelpanic.png