Resetting a mobility M7 7500

[Michel Dänzer]

On Mit, 2011-11-09 at 05:42 -0500, James Cloos wrote: 
> My (old!) laptop stopped displaying anything tonight.
> 
> The bios displays (including the bios passwd display, setup, grub menu,
> etc) all are blank on both the lcd and vga.

Did those show up on VGA before?


> KMS, however, works on the VGA (except that it fails to read the EDID
> adn defaults to 1024x768), and that continues to work in X.  The Xorg
> log suggests that the video card thinks it is mirroring the display to
> both the vga and the lcd, but only the TV is happy.
> 
> Does anyone have any ideas on how the reset an M7?

I don't think there's anything to reset on the GPU itself. It sounds
like either one of your BIOS images got corrupted, or something related
to the LVDS panel physically broke.

Please provide dmesg and Xorg.0.log.


> PS  Should the M7 be able to read the EDID across VGA?

Generally yes.


-- 
Earthling Michel Dänzer           |                   http://www.amd.com
Libre software enthusiast         |          Debian, X and DRI developer