Bug 19707

Summary:	No vga video output after boot
Product:	Mageia	Reporter:	Bernard MAUDRY <ramaspaceship>
Component:	RPM Packages	Assignee:	Kernel and Drivers maintainers <kernel>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	Normal	CC:	tmb
Version:	5
Target Milestone:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Source RPM:	kernel-4.4.26-1.mga5.src.rpm	CVE:
Status comment:

Description Bernard MAUDRY 2016-11-02 20:55:10 CET

Description of problem:
The screen receives no video after boot since last kernel update
In the journal I can see:
nov. 02 16:06:47 Rama kernel: [drm:radeon_dp_link_train [radeon]] *ERROR* clock recovery reached max voltage
nov. 02 16:06:47 Rama kernel: [drm:radeon_dp_link_train [radeon]] *ERROR* clock recovery failed


Version-Release number of selected component (if applicable):
kernel-4.4.26-1.mga5.

How reproducible:
every boot

Steps to Reproduce:
1.boot
2.no vga video on screen
3.

Comment 1 Thomas Backlund 2016-11-03 08:35:07 CET

What was the last kernel that worked ?

CC: (none) => tmb
Assignee: bugsquad => kernel

Comment 2 Bernard MAUDRY 2016-11-03 09:14:54 CET

The one that I am using without any trouble is 4.4.16-desktop-1.mga5
4.4.22-desktop-1.mga5 had the same issue but was quickly replaced by 4.4.26-desktop-1.mga5

Comment 3 Thomas Backlund 2016-11-03 09:20:13 CET

ok, so that confirms my suspicion... 
there were 2 dp link fixes landing in 4.4.21...

I will look up if there is something missing or if I should revert them for now...

Comment 4 Thomas Backlund 2016-11-04 19:57:09 CET

There is now a kernel-4.4.30-2.mga5 currently building where I've added upstream fixes for the regressions introduced in 4.4.21

It should start appearing on mirrors in updates_testing in about 3+ hours...

Please test it out and see if it works for you..

Comment 5 Bernard MAUDRY 2016-11-05 01:19:36 CET

I tested this new kernel and it works perfectly.
Thanks a lot.

Status: NEW => RESOLVED
Resolution: (none) => FIXED