[Nouveau] nouveaufb problems with NV18
younes.m at gmail.com
younes.m at gmail.com
Thu Mar 10 11:48:11 PST 2011
On , George Spelvin <linux at horizon.com> wrote:
> I have an NV18 (GeForce4 MX) connected via DVI to a 1920x1080 LCD,
> and when I try to use the nouveau kernel driver, I get a crappy display.
> Thanks in advance to anyone who can help.
> I'm running a recent nouveau git (fa17f241 drm/nv50: fix thinko in vm
> merged with 2.6.38-rc8.
> When the driver loads (it's compiled as a module, so this is after init
> starts), the console shrinks to a 36x90 character box in the upper-left
> corner of the display.
> When the system is busy, the screen "flashes" to the right.
> The console text appears half a screen to the right for a moment.
> It's particularly annoying right after boot, but settles down once the
> system goes quescent.
> The problem is NOT associated with screen updates. I can run "yes"
> and see the problem very little. hdparm -tT, however, makes the screen
> almost unusable during *both* phases.
> Watching during heavy activity, there's a "standard position" to the
> right where the text tends to appear, but there's also lots of "tearing"
> and it appears in multiple positions. Still pretty recognizable as text,
> though; it doesn't seem to change every scanline.
> X is also screwed up; it fails to start with the messages:
> [ 214.714] (II) NOUVEAU(0): Opened GPU channel 1
> [ 214.715] (II) NOUVEAU(0): [DRI2] Setup complete
> [ 214.715] (II) NOUVEAU(0): [DRI2] DRI driver: nouveau_vieux
> [ 214.716] (EE) NOUVEAU(0): Error allocating scanout buffer: 0
> [ 214.716]
> Fatal server error:
> [ 214.716] AddScreen/ScreenInit failed for driver 0
> ... but I figure that's a more advanced problem.
> I've tried and been unhappy with the nouveau driver on this system in
> the past (I remember it coming up but having lots of horizontal lines of
> "snow" on the display), but Debian recently removed the nv driver that
> worked fine for me from its X distribution, so I'm trying again a bit
> harder this time.
> It's a 2 GB Athlon system, small form factor with onboard video.
> lspci -nn gives:
Is there anything at all connected to the other output (referred to as TV-1
in your log)? You can try disabling TV detection with the tv_disable
nouveau.ko module parameter if a non-existent TV is somehow being detected.
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