Bug 17395

We can add a quirk for this hardware easily, but I'd like to know why VGA detection fails here. Could you turn on Device ModeDebug option and send the log?

Created attachment 18871 [details]
Xorg log

With Option "ModeDebug" "yes"

I think this problem might be gone with recent driver (2.4 branch or master), when we change back CRT detect to original one via hotplug detection. You can verify this by trying latest driver, or run "intel_hotplug" tool from src/reg_dumper/ after system boot but before entering X and paste output here. So we can see if CRT got detect or not now.

ping for response, Brice. Are you able to test a newer driver to see if this is fixed?

I just forwarded your ping to Charles Plessy (downstream reporter).

Created attachment 19272 [details]
Log with Xorg 1.5.0 / Intel driver 2.4.2

Hi,

when testing with higher versions, a lower resolution is picked, 1152x864.

Have a nice day,

-- Charles

965GM should now be able to detect CRT via hotplug now. Your CRT won't be shown as connected anymore. Would you please do a test again?

ping bug reporter...

(In reply to comment #8)
> ping bug reporter...
> 
I did not find time yet to try Debian's experimental package. I hope I can try soon.

-- 
Charles

Created attachment 20761 [details]
Log with Xorg 1.5.0 / Intel driver 2.5.1

(In reply to comment #7)
> 965GM should now be able to detect CRT via hotplug now. Your CRT won't be shown
> as connected anymore. Would you please do a test again?
> 

With the Debian packages xserver-xorg-video-intel 2:2.5.1-1 and xserver-xorg 1:7.4~4, the server still starts at GDM wrong resolution, and then gives a black screen after login (log attached).

-- Charles

Thanks for the testing!

would you please attach your vbios rom as following method?

# cd /sys/devices/pci0000\:00/0000\:00\:02.0/
# echo 1 > rom
# cat rom > /tmp/rom.bin
# echo 0 > rom

then submit the rom.bin to this bug report...thanks!

Created attachment 20774 [details]
vbios rom from Sony VGC-LT71DB

(In reply to comment #12)
> Created an attachment (id=20774) [details]
> vbios rom from Sony VGC-LT71DB 

I extracted when running a X session with the following workaround:

Section "Monitor"
  Identifier "VGA"
  Option "Ignore" "true"
EndSection

Since it is a ROM, I suppose that it does not make a difference.

(In reply to comment #13)
> (In reply to comment #12)
> > Created an attachment (id=20774) [details] [details]
> > vbios rom from Sony VGC-LT71DB 
> 
> I extracted when running a X session with the following workaround:
> 
> Section "Monitor"
>   Identifier "VGA"
>   Option "Ignore" "true"
> EndSection
> 
> Since it is a ROM, I suppose that it does not make a difference.
> 

thanks, Charles. you may need to stay with the work-around for now. The vbios rom has a bit to tell us wether the platform has integrated VGA support or not. We need to improve our driver for that... thanks.

Created attachment 20940 [details] [review]
Use CRT present bit from VBT

This one trys to use VBIOS's crt present flag for CRT initialization. It's against current git master. Could you help to try it?

Comment on attachment 20940 [details] [review]
Use CRT present bit from VBT

Using crt present flag from VBT is broken on my 915G. So it looks not trust to driver. I'll make a quirk patch for this instead.

Created attachment 20971 [details] [review]
quirk crt

Pushed patch to git master.

commit f5f67e1b54e67b4bfc3db3482b2693211be81d63
Author: Zhenyu Wang <zhenyu.z.wang@intel.com>
Date:   Wed Dec 10 10:36:07 2008 +0800

    bug #17395: Quirk CRT for Sony VGC-LT71DB