Bug 1072916 - kernel: [drm] Wrong MCH_SSKPD value: 0x16040307
Summary: kernel: [drm] Wrong MCH_SSKPD value: 0x16040307
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-intel
Version: 20
Hardware: x86_64
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Adam Jackson
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-03-05 11:43 UTC by Peter Littmann
Modified: 2015-06-29 19:16 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-06-29 19:16:12 UTC
Type: Bug
Embargoed:


Attachments (Terms of Use)

Description Peter Littmann 2014-03-05 11:43:54 UTC
Description of problem:
At booting I get the following message in journal:
Mär 05 10:52:04 kernel: vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
Mär 05 10:52:04 kernel: [drm] Wrong MCH_SSKPD value: 0x16040307
Mär 05 10:52:04 kernel: [drm] This can cause pipe underruns and display issues.
Mär 05 10:52:04 kernel: [drm] Please upgrade your BIOS to fix this.
Mär 05 10:52:04 kernel: i915 0000:00:02.0: No connectors reported connected with modes

Version-Release number of selected component (if applicable):
Mär 05 10:52:01 kernel: Linux version 3.13.5-200.fc20.x86_64 (mockbuild@bkernel02) (gcc version 4.8.2 20131212 (Red Hat 4.8.2-7) (GCC) ) #1 SMP Mon Feb 24 16:51:35 U
Mär 05 10:52:01 kernel: Command line: BOOT_IMAGE=/vmlinuz-3.13.5-200.fc20.x86_64 root=/dev/md8 ro vconsole.font=latarcyrheb-sun16 rhgb quiet LANG=en_US.UTF-8

How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:
Only this information so far.

Expected results:
Please check and explain if we really should/have to update the BIOS or if this could be ignored and will disappear with a new kernel?

Additional info:

Comment 1 Josh Boyer 2014-03-05 15:37:27 UTC
I'm fairly sure it won't disappear with the next kernel.  It was added in commit 1d7aaa0cf.

Comment 2 Paweł Sikora 2014-08-22 17:00:17 UTC
i'm observing this issue (pipe underruns/broken display) from time to time
on my asus laptop with hybrid graphics with the latest asus bios update.
is there any plan in the linux world to fix this problem or should i finally
install windows on my hardware?

Comment 3 Fedora End Of Life 2015-05-29 11:09:16 UTC
This message is a reminder that Fedora 20 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 20. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '20'.

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Comment 4 Fedora End Of Life 2015-06-29 19:16:12 UTC
Fedora 20 changed to end-of-life (EOL) status on 2015-06-23. Fedora 20 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

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