general question: xorg & Nvdriver

[Aaron Plattner]

On Wed, Jan 28, 2009 at 11:12:23AM -0800, Florian Lier wrote:
> Hey all,
> 
> I'm trying to get the current (X.Org X Server 1.6.99.1) "X" running on several "test-systems" for like 2 or 3 months now. (for mpx purposes)
> I tested several systems with ATI, INTEL and NVIDIA gcards...
> The most "difficult" system seems to be the one with NVIDIA cards.
> As far as I can interpret the backtrace there is always a problem with the nv driver.
> 
> Backtrace:
> 0: /home/fl0/mpxcompiz/bin/Xorg(xorg_backtrace+0x3b) [0x80e829b]
> 1: /home/fl0/mpxcompiz/bin/Xorg(xf86SigHandler+0x51) [0x809ccb1]
> 2: [0xb7f78400]
> 3: /home/fl0/mpxcompiz/bin/Xorg(xf86SetDesiredModes+0x27b) [0x80ab18b]
> 4: /home/fl0/mpxcompiz/lib/xorg/modules/drivers//nv_drv.so [0xb7a6412c]
> 5: /home/fl0/mpxcompiz/lib/xorg/modules/drivers//nv_drv.so [0xb7a64562]
> 6: /home/fl0/mpxcompiz/bin/Xorg(AddScreen+0x19d) [0x80684ad]
> 7: /home/fl0/mpxcompiz/bin/Xorg(InitOutput+0x23a) [0x808b12a]
> 8: /home/fl0/mpxcompiz/bin/Xorg [0x8068ba1]
> 9: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5) [0xb7b19685]
> 10: /home/fl0/mpxcompiz/bin/Xorg [0x8068231]

The nv driver calls back into the X server to set the first mode by calling
xf86SetDesiredModes, which is crashing somewhere.  This sounds like a
regression in the X server.  I'd recommend getting a debug X server,
catching the crash in GDB, and then getting a backtrace.  It's possible
that the nv driver is doing something funky to the modepool that confuses
xf86SetDesiredModes, but your modes look pretty normal.

> Does anyone of you know a revision which doesn't stuck on startup including the nv-driver?
> Pls, correct me if I'm wrong with the nv driver thang.
> 
> I also check out the xorg tinderbox from time to time ... seems that the last time the master branch compiled
> successfully was 2009-01-20.
> 
> cheers, fl0