[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

[James Page]

Lenova x260 i7 laptop - screen blanks for < 1 second when this happens

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: linux-image-4.8.0-27-generic 4.8.0-27.29
ProcVersionSignature: Ubuntu 4.8.0-27.29-generic 4.8.1
Uname: Linux 4.8.0-27-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
ApportVersion: 2.20.3-0ubuntu8
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Nov 21 16:49:37 2016
HibernationDevice: RESUME=UUID=2a2aa818-8baa-4c43-9dad-51997def38f8
InstallationDate: Installed on 2016-11-06 (15 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
MachineType: LENOVO 20F6CTO1WW
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-27-generic.efi.signed root=UUID=a1b30635-761b-43ba-af92-7e41dcb3968c ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.8.0-27-generic N/A
 linux-backports-modules-4.8.0-27-generic N/A
 linux-firmware 1.161
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: 20F6CTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 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:pn20F6CTO1WW:pvrThinkPadX260:rvnLENOVO:rn20F6CTO1WW:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20F6CTO1WW
dmi.product.version: ThinkPad X260
dmi.sys.vendor: LENOVO

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

This might be related to bug 1643566. There were some Skylake fixes in upstream v4.9.

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.9 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/v4.9-rc6

[James Page (james-page)]

Tried with the mainline kernel:

[ 4.124634] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun

on pipe B this time but looks the same - I'll run with the mainline and see if I still get the same screen blanks.

[James Page (james-page)]

Re reference to bug 1643566 - I've not been using my x260 that much with the built-in screen yet (its new) - I've only seen the issue with the external monitor.

[Joseph Salisbury (jsalisbury)]

It would also be good to test the HWE kernel posted in comment #2 of bug 1643566

[James Page (james-page)]

OK I'll try that with the kernel team PPA as well.

I had to drop the mainline kernel - no zfs which blocked me on some other work.

[ilija (ilija)]

Hey folks ...

I am putting my two cents that I am seeing the same error message with the following setup:

- Lenovo X1 Yoga
- Intel HD520 Graphics
- Onelink+ docking station with two Displayport connected monitors
- Ubuntu 16.04
- Tested with following mainline PPA kernels (4.4.x, 4.6.x, 4.7.x, 4.8.x, 4.9 RC6)

The issue persists in what appears all kernel branches from the mainline builds. Below is the syslog message from my test with 4.7.6 kernel from mainline from this morning:

Nov 22 10:31:46 mikrobi-x1 kernel: [ 51.190096] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many full retries, give up
Nov 22 10:31:46 mikrobi-x1 kernel: [ 51.373368] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many full retries, give up
Nov 22 10:31:46 mikrobi-x1 kernel: [ 51.556637] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many full retries, give up
Nov 22 10:31:47 mikrobi-x1 kernel: [ 51.741428] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many full retries, give up
Nov 22 10:31:47 mikrobi-x1 kernel: [ 51.759618] thinkpad_acpi: docked into hotplug port replicator
Nov 22 10:31:47 mikrobi-x1 kernel: [ 51.924742] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many full retries, give up
Nov 22 10:31:47 mikrobi-x1 kernel: [ 52.108033] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many full retries, give up
Nov 22 10:31:47 mikrobi-x1 kernel: [ 52.275031] thinkpad_acpi: EC reports that Thermal Table has changed
Nov 22 10:31:47 mikrobi-x1 kernel: [ 52.291527] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many full retries, give up
Nov 22 10:31:47 mikrobi-x1 kernel: [ 52.291742] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to train DP, aborting
Nov 22 10:31:47 mikrobi-x1 kernel: [ 52.469866] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many full retries, give up
Nov 22 10:31:48 mikrobi-x1 kernel: [ 52.653161] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many full retries, give up
Nov 22 10:31:48 mikrobi-x1 kernel: [ 52.804504] thinkpad_acpi: docked into hotplug port replicator
Nov 22 10:31:48 mikrobi-x1 kernel: [ 52.821223] thinkpad_acpi: docked into hotplug port replicator
Nov 22 10:31:48 mikrobi-x1 kernel: [ 52.838230] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many full retries, give up
Nov 22 10:31:48 mikrobi-x1 kernel: [ 53.021513] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many full retries, give up
Nov 22 10:31:48 mikrobi-x1 kernel: [ 53.204870] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many full retries, give up
Nov 22 10:31:48 mikrobi-x1 kernel: [ 53.288654] thinkpad_acpi: EC reports that Thermal Table has changed
Nov 22 10:31:48 mikrobi-x1 kernel: [ 53.388230] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many full retries, give up
Nov 22 10:31:48 mikrobi-x1 kernel: [ 53.391823] thinkpad_acpi: EC reports that Thermal Table has changed
Nov 22 10:31:48 mikrobi-x1 kernel: [ 53.571517] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many full retries, give up
No...

[James Page (james-page)]

Running OK so far with the kernel team PPA and the proposed 4.8 kernel updates.

[ilija (ilija)]

James,

Can you please clarify running OK. For me everything runs okay if I use the main display on the laptop or connect a monitor to the DisplayPort port. However, I get the error messages when I connect the external docking station (Thinkpad Onelink+). As per my post, the error message was still being seen with 4.8.10 (the latest from the 4.8.x branch) from http://kernel.ubuntu.com/~kernel-ppa/mainline/.

Thanks ... Ilija

[James Page (james-page)]

Hi Iilija

I don't use a docking station, but I was seeing occasion blanking of the screen with an external monitor plugged into the display port.

Running with the proposed 4.8 kernel from the kernel team PPA has appeared to resolve the issue - I've not see the original drm kernel error message, and the external monitor has be solid all day.

[James Page (james-page)]

(sorry to many i's - its late :-))

[Joseph Salisbury (jsalisbury)]

Does this bug still happen on Yakkety with the latest updates?

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu Yakkety) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]