Bug 1612773 - kernel-4.17.12-200.fc28.x86_64, nouveau: graphics regression
Summary: kernel-4.17.12-200.fc28.x86_64, nouveau: graphics regression
Alias: None
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-nouveau
Version: 28
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Ben Skeggs
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2018-08-06 08:59 UTC by Nils Philippsen
Modified: 2019-05-28 22:03 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2019-05-28 22:03:39 UTC
Type: Bug

Attachments (Terms of Use)
kernel log messages of the affected 4.17.12 kernel (145.37 KB, text/x-vhdl)
2018-08-06 08:59 UTC, Nils Philippsen
no flags Details
kernel log messages of the unaffected 4.17.10 kernel (3.45 MB, text/x-vhdl)
2018-08-06 09:00 UTC, Nils Philippsen
no flags Details

System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 1601383 0 unspecified CLOSED 4.17.6-200.fc28.x86_64, nouveau: graphics regressions 2021-02-22 00:41:40 UTC

Description Nils Philippsen 2018-08-06 08:59:20 UTC
Created attachment 1473544 [details]
kernel log messages of the affected 4.17.12 kernel

Description of problem:

This is essentially bug #1601383 again.

Booting 4.17.12-200.fc28 gives a lot of flickering, some nouveau related error messages and while it knows about the display attached to the display port of the dock, there's no output there. The previous 4.17.10-200.fc28 kernel works fine in that regard (it "forgets" about the external display when undocked but that's an old, different problem).

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Boot

Actual results:
- boot takes longer
- flickers back and forth a few times between text and graphical modes before displaying the login screen
- only the internal display shows content, the external monitor stays dark even though it seems to be recognized after booting, the GNOME desktop spans both displays (the top bar isn't shown on and the mouse cursor can move off the visible screen).
- much more nouveau related error messages than the 4.17.10 kernel

Expected results:
- external monitor displays content
- no excessive flickering, error messages

Comment 1 Nils Philippsen 2018-08-06 09:00:48 UTC
Created attachment 1473546 [details]
kernel log messages of the unaffected 4.17.10 kernel

Comment 2 Nils Philippsen 2018-08-06 09:06:32 UTC
NB: the laptop is a Lenovo Thinkpad P50

Comment 3 Nils Philippsen 2018-08-06 09:20:47 UTC
Hmm, I rebooted into 4.17.11 which didn't exhibit the problem, then back into 4.17.12 and it worked also -- so reproducibility is unclear and the previous bug #1601383 wasn't really fixed (but the conditions changes so the bug didn't occur).

Comment 4 Ben Cotton 2019-05-02 21:11:45 UTC
This message is a reminder that Fedora 28 is nearing its end of life.
On 2019-May-28 Fedora will stop maintaining and issuing updates for
Fedora 28. 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 '28'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

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able to fix it before Fedora 28 is end of life. If you would still like 
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Comment 5 Ben Cotton 2019-05-28 22:03:39 UTC
Fedora 28 changed to end-of-life (EOL) status on 2019-05-28. Fedora 28 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.

If you can reproduce this bug against a currently maintained version of
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