kernel-packages team mailing list archive

[Morten Clausen <morten.c@xxxxxxxxxx>]

Yes this patch is in the mainline kernel v4.5-rc1-wily. But I think
regarding our problem here it does only what it says: shut up the
messages. I just tested it, got a

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

at boot time now (related:
https://bugzilla.kernel.org/show_bug.cgi?id=95461), while the

[drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied
(SDE)!

are gone. With external monitor connected things getting worse, gdm
isn't able to use the monitor correctly and crashes from time to time.
Looks like there are now other i915 bugs (maybe regression?) more
urgent. Personally I will stick to 4.4 until I've got time to
investigate this further with a clean install of ubuntu to eliminate the
possibility that I'm looking at completely unrelated issues here.

** Bug watch added: Linux Kernel Bug Tracker #95461
   http://bugzilla.kernel.org/show_bug.cgi?id=95461

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https://bugs.launchpad.net/bugs/1488719

Title:
  dmesg shows "[drm:gen8_irq_handler [i915]] *ERROR* The master control
  interrupt lied (SDE)!"

Status in Linux:
  Confirmed
Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On a recent intel NUC using i915 graphics, I get the following errors
  in dmesg:

  [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt
  lied (SDE)!

  There are two monitors connected to this box, one with mini-
  HDMI->HDMI, one with mini-DP->HDMI cable.

  Maybe related:

  https://bugs.freedesktop.org/show_bug.cgi?id=80896

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-generic 3.19.0.26.25
  ProcVersionSignature: Ubuntu 3.19.0-26.28-generic 3.19.8-ckt4
  Uname: Linux 3.19.0-26-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.3
  Architecture: amd64
  Date: Wed Aug 26 10:07:31 2015
  InstallationDate: Installed on 2015-08-01 (24 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-26-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)

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