drm intel pch error with liveDVD boot

[peterzay]

When booting this Dell Dimension 660 desktop with Ubuntu 16.04 64-bit liveDVD, you get the following 2 messages:

[ 4.818930] [drm:intel_set_pch_fifo_underrun_reporting [1915]] *ERROR* uncleared pch fifo underrun on pch transcoder A
[ 4.818950] [drm:intel_pch_fifo_underrun_irq_handler [1915]] *ERROR* PCH transcoder A FIFO underrun

This is reproducible at each boot.

A screenshot is included.

Please reassign gedit error to the appropriate category.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gedit 3.18.3-0ubuntu4
ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Mon May 9 16:27:43 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-04-21 (17 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: gedit
UpgradeStatus: No upgrade log present (probably fresh install)
---
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: peterzay 2135 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.04
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=d4cc899f-a5b7-4e34-8f8c-66033a82128a
InstallationDate: Installed on 2016-04-21 (18 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
MachineType: Dell Inc. Inspiron 660
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic root=UUID=727212e7-10b4-419b-80e6-431ac1194bb1 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-22-generic N/A
 linux-backports-modules-4.4.0-22-generic N/A
 linux-firmware 1.157
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
Tags: xenial
Uname: Linux 4.4.0-22-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 10/14/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A11
dmi.board.name: 084J0R
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA11:bd10/14/2013:svnDellInc.:pnInspiron660:pvr:rvnDellInc.:rn084J0R:rvrA00:cvnDellInc.:ct3:cvr:
dmi.product.name: Inspiron 660
dmi.sys.vendor: Dell Inc.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1579901

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[peterzay (peterzay)]

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[peterzay (peterzay)]

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[peterzay (peterzay)]

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[peterzay (peterzay)]

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[peterzay (peterzay)]

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[peterzay (peterzay)]

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[peterzay (peterzay)]

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[peterzay (peterzay)]

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[peterzay (peterzay)]

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[peterzay (peterzay)]

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[peterzay (peterzay)]

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[peterzay (peterzay)]

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[peterzay (peterzay)]

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[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.6 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/v4.6-rc7-wily/

[peterzay (peterzay)]

This problem only occurs with a liveDVD boot.

Please direct me to a download site for the iso image which runs the v4.6 kernel.

[Brad Figg (brad-figg)]

This change was made by a bot.

[penalvch (penalvch)]

peterzay, to clarify:
1) You only see the error message while in the live environment (not in installed)?
2) Do you notice any actual functionality issues?

[peterzay (peterzay)]

1) You only see the error message while in the live environment (not in installed)?
   ==> correct, only during boot of the liveDVD.
2) Do you notice any actual functionality issues?
   No, but I am completely new to 16.04, so this may not be significant.

[Brad Figg (brad-figg)]

This change was made by a bot.