Got a system that I’ve been using for a long time now without any problems. Now suddenly it won’t use a higher resolution than 1024x768.
Found these in /var/log/messages
May 27 07:20:31 linux-6kbj kernel: 1566.737619] [drm:drm_edid_is_valid] *ERROR* EDID checksum is invalid, remainder is 54
May 27 07:20:31 linux-6kbj kernel: 1566.737621] [drm:drm_edid_is_valid] *ERROR* Raw EDID:
May 27 21:54:51 linux-6kbj kernel: 139.449064] radeon 0000:03:00.0: VGA-1: EDID invalid.
Xorg.0.log lists available modes up to 1024x768 and no higher. Monitor should do 1600 x …something and was working fine till just lately. I never added any mods to the configuration and have not added any software other than recommended updates it quite a while.
Any ideas what happened or how to fix it? I checked and the monitor/graphics card will still do upper resolutions with windoze so I’m guessing the hardware is alright.
Using OpenSuse 11.3, 64bit, on a dual core athalon with a Sapphire ATI x1600 graphics card and a 22 inch flat screen that is supposed to go 1600 x 1050. Any suggestions appreciated.
You could upload your Xorg.0.log contents to SUSE Paste (or similar), then post the link to it here. Looks like it doesn’t like the checksum; maybe it tolerated this previously.
It might be possible to coax the radeon driver to ignore any problematic EDID if necessary, by creating a minimal xorg.conf file. (I can try to guide you through this if necessary).
Now, one thought I had: Did you possibly change cable connection recently, or have a KVM between the display and your computer perhaps? If not, maybe a recent update caused this (updated radeon driver).
I’ve made no changes to the cable or anything else for that matter. There was an automatic update notification the other night and I went through the usual routine. The more I think about it the more I think that’s what went wrong. I’ve done nothing else. I’d rather not start doing “workarounds” when something is so obviously broken. Is there a standard method for rolling back the updates? An update history log? I notice now that VO (Game) won’t run full screen anymore either so a change in the graphic driver would probably cause that.
Another note: Looking at my var/log/warn file, it appears the EDID message has been logging since I installed the system, so that would not appear to be part of the new behavior. Been looking for a log to list what changed. Anybody know where the updates get logged?