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FS#422 - psb_gfx module causes a scrambled screen output when X starts, on Intel GMA 500.

Attached to Project: [Repo Platform]
Opened by Simply (simplygades) - Thursday, 01 March 2012, 19:45 GMT
Last edited by Anke Boersma (abveritas) - Tuesday, 09 October 2012, 22:01 GMT
Task Type Bug Report
Category Backend / Core
Status Closed
Assigned To No-one
Operating System
Severity Medium
Priority Normal
Reported Version Archimedes
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Tried blacklisting poulsbo module at boot, in order for the psb_gfx to be loaded, but the result was an unusable KDE desktop. the screen is replicated 5 times, on the horizontal axis, and there are blank lines on the vertical one.
This task depends upon

Closed by  Anke Boersma (abveritas)
Tuesday, 09 October 2012, 22:01 GMT
Reason for closing:  Deferred
Additional comments about closing:  No further response from submitter, can't be reproduced
Comment by Adrián Chaves Fernández (Gallaecio) - Sunday, 29 July 2012, 08:50 GMT
Is this still happening? Have you followed the instructions in https://wiki.archlinux.org/index.php/Poulsbo#Xorg-server_1.7_or_higher_.28current_Arch.29 ?
Comment by Simply (simplygades) - Sunday, 29 July 2012, 09:10 GMT
It happened last time I tried to run 2012.07 off the USB Flash. However, I haven't tried these workarounds yet, I'll test and report again.
Comment by Simply (simplygades) - Monday, 30 July 2012, 19:50 GMT
OK, the problem is X related, since choosing terminal mode at boot results in native resolution VT. As soon as I start X, everything is a mess, and VTs are blank. So, I think the autoconfiguration is to blame. Please tell me if I can help otherwise, as it is now I can't even provide logs.
Comment by Daniele Cocca (jmc) - Tuesday, 31 July 2012, 09:00 GMT
I think it might be your monitor not fully supporting the resolution automatically picked by X.Org (which I think is the maximum one supported by the graphics card).

You could try a couple of things: 1) check in the X logs if it fails reading the EDID information from the monitor, which can be a clear indicator of what I told you, 2) try and see if it works on another distribution: if so, take note of the resolution in use and launch xvidtune or whatever else is appropriate to determine the correct ModeLine for your monitor.
The ModeLine can then be added to xorg.conf to tell X.Org to use the specified parameters for that particular resolution. You could also see if defaulting to a smaller screen resolution fixes that for you.
Comment by Simply (simplygades) - Wednesday, 26 September 2012, 16:35 GMT
Thanks for the reply, but my GMA500 powered netbook was almost killed by a lightning, it doesn't boot. It worked fine with *ubuntu variants.

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