Bug 1398814

Summary: External screen flickering after upgrading from kernel-4.8.6-201.fc24.x86_64 to kernel-4.8.8-200.fc24.x86_64
Product: [Fedora] Fedora Reporter: Tadej Janež <tadej.j>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED EOL QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 25CC: cz172638, gansalmon, ichavero, itamar, jonathan, kernel-maint, madhu.chinakonda, mchehab
Target Milestone: ---Keywords: Reopened
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
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Last Closed: 2017-12-12 10:16:35 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
Smartphone recording of the screen flickering problem none

Description Tadej Janež 2016-11-26 10:56:04 UTC
Description of problem:
After connecting an external monitor, the screen starts flickering erratically. If I disconnect the external monitor, the screen no longer flickers.


Version-Release number of selected component (if applicable):
Fully up2date Fedora 24 with kernel-4.8.8-200.fc24.x86_64.

How reproducible:
Always.

Steps to Reproduce:
1. Reboot the machine with kernel-4.8.8-200.fc24.x86_64.
2. Log into GNOME desktop.
3. Connect an external monitor and start some applications.

Actual results:
The screen is erratically flickering making the machine very hard to use.

Expected results:
The screen is steady (i.e. not flickering).

Additional info:
HP Zbook 15 G2 with BIOS version: M70 Ver. 01.15

Graphics card (abbreviated output of lscpi):
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Venus XT [Radeon HD 8870M / R9 M270X/M370X] (prog-if 00 [VGA controller])
	Subsystem: Hewlett-Packard Company Device 2254
	Flags: bus master, fast devsel, latency 0, IRQ 34
	Memory at 70000000 (64-bit, prefetchable) [size=256M]
	Memory at c0200000 (64-bit, non-prefetchable) [size=256K]
	I/O ports at 5000 [size=256]
	Expansion ROM at 000c0000 [disabled] [size=128K]
	Capabilities: [48] Vendor Specific Information: Len=08 <?>
	Capabilities: [50] Power Management version 3
	Capabilities: [58] Express Legacy Endpoint, MSI 00
	Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [200] #15
	Capabilities: [270] #19
	Kernel driver in use: radeon
	Kernel modules: radeon

When the flickering is "happening", the following entries fill systemd's journal:
Nov 26 10:25:37 tlinux64 /usr/libexec/gdm-x-session[2877]: (WW) RADEON(0): radeon_dri2_flip_event_handler: Pageflip completion event has impossible msc 27475 < target_msc 27476
Nov 26 10:25:38 tlinux64 /usr/libexec/gdm-x-session[2877]: (WW) RADEON(0): radeon_dri2_flip_event_handler: Pageflip completion event has impossible msc 27528 < target_msc 27529
Nov 26 10:25:38 tlinux64 /usr/libexec/gdm-x-session[2877]: (WW) RADEON(0): radeon_dri2_flip_event_handler: Pageflip completion event has impossible msc 27536 < target_msc 27537
Nov 26 10:25:38 tlinux64 /usr/libexec/gdm-x-session[2877]: (WW) RADEON(0): radeon_dri2_flip_event_handler: Pageflip completion event has impossible msc 27536 < target_msc 27537
Nov 26 10:25:44 tlinux64 /usr/libexec/gdm-x-session[2877]: (WW) RADEON(0): radeon_dri2_flip_event_handler: Pageflip completion event has impossible msc 27843 < target_msc 27844
[ ... output trimmed ... ]

Comment 1 Justin M. Forbes 2017-04-11 14:59:02 UTC
*********** MASS BUG UPDATE **************

We apologize for the inconvenience.  There are a large number of bugs to go through and several of them have gone stale.  Due to this, we are doing a mass bug update across all of the Fedora 24 kernel bugs.

Fedora 25 has now been rebased to 4.10.9-100.fc24.  Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel.

If you have moved on to Fedora 26, and are still experiencing this issue, please change the version to Fedora 26.

If you experience different issues, please open a new bug report for those.

Comment 2 Justin M. Forbes 2017-04-28 17:22:01 UTC
*********** MASS BUG UPDATE **************
This bug is being closed with INSUFFICIENT_DATA as there has not been a response in 2 weeks. If you are still experiencing this issue, please reopen and attach the 
relevant data from the latest kernel you are running and any data that might have been requested previously.

Comment 3 Tadej Janež 2017-05-04 11:01:51 UTC
This is still present with kernel-4.10.10-200.fc25.x86_64.

Comment 4 Tadej Janež 2017-05-04 11:06:43 UTC
Created attachment 1276245 [details]
Smartphone recording of the screen flickering problem

Comment 5 Fedora End Of Life 2017-11-16 19:50:26 UTC
This message is a reminder that Fedora 25 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 25. 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 '25'.

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.

Thank you for reporting this issue and we are sorry that we were not
able to fix it before Fedora 25 is end of life. If you would still like
to see this bug fixed and are able to reproduce it against a later version
of Fedora, you are encouraged  change the 'version' to a later Fedora
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's
lifetime, sometimes those efforts are overtaken by events. Often a
more recent Fedora release includes newer upstream software that fixes
bugs or makes them obsolete.

Comment 6 Fedora End Of Life 2017-12-12 10:16:35 UTC
Fedora 25 changed to end-of-life (EOL) status on 2017-12-12. Fedora 25 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
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
bug.

Thank you for reporting this bug and we are sorry it could not be fixed.