Ticket #1282 (new defect)

Opened 9 years ago

Last modified 9 years ago

Dell 7010 DVI-I stupidity

Reported by: jdreed Owned by:
Priority: normal Milestone: The Distant Future
Component: -- Keywords:
Cc: Fixed in version:
Upstream bug:

Description

The 7010s, when using DVI-I to VGA, display borked video (either a rapid black-and-white flashing of the screen, or the entire image compressed into a 5 rows of pixels at the top of the screen). This can be worked around by forcing the grub prompt to be displayed and forcing grub to 640x480. Yes, really.

I suspect this is a variant of the same stupid framebuffer issues we had with kexec'ing for the Natty upgrade (see r25347, r25349, r25351, r25353, r25357 and associated stupidity).

Change History

comment:1 Changed 9 years ago by jdreed

Appending nomodeset also "fixes" this in that you get 4:3 stretched to 16:9, but at least you get a usable desktop. I cannot come up with a video= setting that works.

comment:2 Changed 9 years ago by jdreed

(For maximum stupidity, this works if you force grub to display its menu, even for a few seconds, which presumably does some sort of framebuffer magic that I can't replicate with kms.)

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