Bug 28554

Summary: Radeon fail with DisplayPort
Product: DRI Reporter: Sébastien Luttringer <seblu>
Component: DRM/RadeonAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED DUPLICATE QA Contact:
Severity: blocker    
Priority: medium CC: remi, travisghansen
Version: XOrg git   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
dmesg
none
Xorg log file
none
dmesg without modeset
none
Xorg.0.log without modeset
none
Xorg.0.log with a mode lower than 2560 none

Description Sébastien Luttringer 2010-06-15 09:00:05 UTC 
Created attachment 36293 [details] [review]
dmesg

Hi,

I would report you a bug with displayport and radeon module on recent linux 
kernel. When my card is plugged with displayport I have the following error in 
dmesg and screen stay black.
[   18.493734] [drm:dp_link_train] ERROR clock recovery reached max voltage
[   18.493735] [drm:dp_link_train] ERROR clock recovery failed
[   18.510279] [drm:dp_link_train] ERROR channel eq failed: 5 tries
[   18.510280] [drm:dp_link_train] ERROR channel eq failed

When i plug my screen with (dell 27" 2560*1440) a DVI cord everything is 
fabulous.

This was tested with 2.6.35-rc3, 2.6.34, 2.6.32 and all is revelent. I've also 
tested with a patch from here : 
http://comments.gmane.org/gmane.comp.video.dri.devel/46851
but nothing change.

My test was done with a debian sid/experimental disto.
# lspci|grep VGA  
01:00.0 VGA compatible controller: ATI Technologies Inc RV710 [Radeon HD 4550]
# uname -a                                                                                                                                                                                                                                                                                              
Linux sluttrin 2.6.35-rc3-seblu #5 SMP Mon Jun 14 15:43:18 CEST 2010 x86_64 
GNU/Linux
# dpkg -l|grep -e radeon -e mesa                                                                                                                                                                                                                                                                         
(16:47)[2]
ii  libdrm-radeon1                       2.4.21-1                        
Userspace interface to radeon-specific kerne
ii  libdrm-radeon1-dbg                   2.4.21-1                        
Userspace interface to radeon-specific kerne
ii  libgl1-mesa-dri                      7.8.1-2                         A 
free implementation of the OpenGL API -- D
ii  libgl1-mesa-glx                      7.8.1-2                         A 
free implementation of the OpenGL API -- G
ii  libglu1-mesa                         7.7.1-3                         The 
OpenGL utility library (GLU)
ii  mesa-utils                           7.7.1-3                         
Miscellaneous Mesa GL utilities
ii  xserver-xorg-video-radeon            1:6.13.0-2                      X.Org 
X server -- AMD/ATI Radeon display dri
ii  xserver-xorg-video-radeon-dbg        1:6.13.0-2                      X.Org 
X server -- AMD/ATI Radeon display dri
ii  xserver-xorg-video-radeonhd          1.3.0-3                         X.Org 
X server -- AMD/ATI r5xx-r7xx alternat
ii  xserver-xorg-video-radeonhd-dbg      1.3.0-3                         X.Org 
X server -- AMD/ATI r5xx-r7xx alternat

I can provide more information on request and offer help testing patches.

Regards,
Comment 1 Sébastien Luttringer 2010-06-15 09:00:45 UTC 
Created attachment 36294 [details] [review]
Xorg log file
Comment 2 Sébastien Luttringer 2010-06-15 09:14:18 UTC 
test with modeseting disable is the same. Screen stay black. But error is not in dmesg. I will add Xorg log and dmesg.

Need anything else ?
Comment 3 Sébastien Luttringer 2010-06-15 09:15:02 UTC 
Created attachment 36295 [details] [review]
dmesg without modeset
Comment 4 Sébastien Luttringer 2010-06-15 09:15:32 UTC 
Created attachment 36296 [details] [review]
Xorg.0.log without modeset
Comment 5 Alex Deucher 2010-06-15 10:30:43 UTC 
Do any modes other than 2560x1440 work ok?
Comment 6 Sébastien Luttringer 2010-06-15 10:54:50 UTC 
with this xorg.conf

	SubSection "Display"
		#Modes	"2560x1440" "1920x1200" "1280x1024" "1024x768" "800x600" "640x480"
		Modes	"1024x768" "800x600" "640x480"
	EndSubSection

screen is still black. In attachment, xorg log file

On Tue, Jun 15, 2010 at 7:30 PM,  <bugzilla-daemon@freedesktop.org> wrote:
> https://bugs.freedesktop.org/show_bug.cgi?id=28554
>
> --- Comment #5 from Alex Deucher <agd5f@yahoo.com> 2010-06-15 10:30:43 PDT ---
> Do any modes other than 2560x1440 work ok?
>
> --
> Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
> ------- You are receiving this mail because: -------
> You reported the bug.
>
Comment 7 Sébastien Luttringer 2010-06-15 10:58:47 UTC 
Created attachment 36299 [details]
Xorg.0.log with a mode lower than 2560

This is an example with a resolution of 1024x768. But none other works.
Comment 8 Alex Deucher 2010-06-17 09:02:54 UTC 

*** This bug has been marked as a duplicate of bug 27314 ***

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.