errors switching to vga out or vts from x (nvidia gfx)

chrbecke

Hi,

I got a new laptop (Toshiba Tecra R10-11Y, C2D, nvidia Quadro NVS 150M) and am having trouble getting the vga out to work, running a ~amd64 multilib setup. I have tried several combinations of kernels (gentoo-sources 2.6.30-r5, -2.6.31-r1, -2.6.31-r2) and nvidia-drivers (185.18.31, 185.18.36 (rolled my own ebuild) and 190.36), both with and without uvesafb enabled.

Without X, switching from LCD to external monitor and back works, both with and without framebuffer console.

With nvidia-drivers-185.18.31, X does not start at all (the nvidia driver triggers a kernel BUG()). With the later nvidia drivers, X (I used both gnome and twm sessions for my tests, started from an ssh session) starts alright. When I hit <Fn>+<F5> to switch to the monitor, the monitor detects a signal, but it does not display anything (without framebuffer console) or a garbled screen (with framebuffer console). Switching to vts does not work anymore. When I then try to stop X (hitting <ctrl>+C), X is taking a long time to stop. When I then try to start X again, it segfaults. See a console log and the xorg log.

Another maybe related bug is, that when I switch from X to a vt, the screen goes black. If I then switch to vga out and back, the console is displayed alright. Switching back to X works, too.

I also tried different settings for NVreg_Mobile and NVreg_UseVBios options for the nvidia module, without success.

I don't know what to try next. Does anyone know how to get the vga out working from X? Or any hints on further debugging?

Thanks,

Chris

Mike Hunt · Watchman Joined: 19 Jul 2009 Posts: 5287

does grep -i nvidia /var/log/messages return anything?

is <user> in all the required groups?

chrbecke · Posted: Fri Oct 09, 2009 7:28 am Post subject:

Yes, see the dmesg output posted above: