Patch attached -- basically, a G550 user has reported that dotclocks needed to be at least 17750Hz to not lock up his card. Either we need to increase the minimum dotclock for everyone, or just for >= G550, at a guess. Debian patch #099m.
Created attachment 3042 [details] [review] increase minclock to 17750
12 to 18 MHz is not a lot of difference, you'd break 512x384@60 and below but oh well. this gets my vote.
I may be misunderstanding something, but should the value of MinClock be derived from pMga->bios.pixel.min_freq? For all cards before the G450 the default value is 50MHz. For the G450 it jumps to 256MHz.
if it's reliable, it seems a sensible thing to do. i can have a go at getting back to the user if you're more comfortable with that, but this seems like a good interim measure?
not strong enough to block
*** Bug 2601 has been marked as a duplicate of this bug. ***
Is this really the same bug as 2601? Can a too low dotclock rate explain using the wrong frequencies, especially different frequencies at different outputs?
Added patch keyword
Assigning to idr for evaluation. Probably going to move to 7.2 tracker if there's no movement within about a week.
(In reply to comment #9) > Assigning to idr for evaluation. Probably going to move to 7.2 tracker if > there's no movement within about a week. Keeping my word, move to 7.2. I have some additional changes from matrox that we should look at for a stable release relative to 7.1.
ajax: ping re changes?
... punting from tracker.
Sorry about the phenomenal bug spam, guys. Adding xorg-team@ to the QA contact so bugs don't get lost in future.
Fixed in 7d7626f8429e108dd326899d927de4b4c79f71f5.
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