Bug 691087

Summary: Kernel-desktop 2.6.37.6-0.5-desktop fails to find connectors other than S-VIDEO
Product: [openSUSE] openSUSE 11.4 Reporter: Peter B <auxsvr>
Component: KernelAssignee: E-mail List <kernel-maintainers>
Status: RESOLVED DUPLICATE QA Contact: E-mail List <qa-bugs>
Severity: Major    
Priority: P5 - None CC: eich, jdelvare, meissner
Version: Final   
Target Milestone: ---   
Hardware: i686   
OS: openSUSE 11.4   
Whiteboard:
Found By: --- Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---
Attachments: Dmesg from the problematic kernel

Description Peter B 2011-05-01 08:56:05 UTC
User-Agent:       Mozilla/5.0 (X11; Linux i686; rv:2.0.0) Gecko/20100101 Firefox/4.0

After updating the kernel, the connected monitor could not be found and the kernel defaulted to 1024x768. The messages from dmesg:

Radeon Display Connectors
 Connector 0:
   S-video
   Encoders:
     TV1: INTERNAL_DAC2
 No connectors reported connected with modes
 Cannot find any crtc or sizes - going 1024x768

indicate that only the S-VIDEO connector is found. The monitor is connected to the VGA connector and works properly if I downgrade the kernel to the version shipped with oS 11.4.

Reproducible: Always

Steps to Reproduce:
1. Update the kernel to the version provided in the update repository.

Actual Results:  
Both the kernel and Xorg fail to find the monitor.

Expected Results:  
The monitor should operate normally.

The graphics card is a radeon rv350 AS. Something that might be related is that even the working kernel doesn't find the correct resolution of the monitor, rendering necessary the use of modelines to configure Xorg properly.
Comment 1 Marcus Meissner 2011-05-02 09:25:15 UTC
hmnm, egbert?
Comment 2 Peter B 2011-05-03 11:11:16 UTC
Created attachment 427710 [details]
Dmesg from the problematic kernel

Hm, I had added the attachment when I created the bug report...
Comment 3 Peter B 2011-06-22 05:18:31 UTC
This looks like a duplicate of #699209 and #691052.
Comment 4 Peter B 2011-08-05 16:00:26 UTC
This still occurs with the latest patch kernel-desktop-2.6.37.6-0.7.1, even though bug report 699209 is marked as fixed.
Comment 5 Jean Delvare 2011-10-11 13:27:15 UTC
Actually this smells a lot like #712023. John, please try booting with i2c_algo_bit.bit_test=0 and see if it helps.
Comment 6 Peter B 2011-10-11 22:23:01 UTC
I've been using i2c_algo_bit.bit_test=0 since I reported this, otherwise the PC is useless.
Comment 7 Jean Delvare 2011-10-12 07:42:08 UTC
Thanks for your report, this confirms that this is a duplicate of bug #712023, which is now fixed.

*** This bug has been marked as a duplicate of bug 712023 ***