[SYSTEM: Ubuntu Jaunty 32-bit, 4GB RAM, nVidia Quadro FX 770M -- 512MB ]
Hi again all,
after some research I'm wondering whether I might be dealing with two problems,
both fixable by tampering with /proc/mtrr :
(1) the way main memory is allocated to my graphics card:
http://ubuntuforums.org/showthread.php?t=1130582 (Intel specific, but may
apply for other
manufacturers)
Look at the MTRR stuff specifically. A technique for fixing /proc/mtrr
settings
is found here (i.e. using "write-combining"):
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
intel/+bug/314928
(2) following material above, I found that the memory reported by lspci is
different
from what I see in /proc/mtrr (256MB versus 512MB). Could this be related
to my problems?
---------------------------
# lspci -vvnn | less
01:00.0 VGA compatible controller: nVidia Corporation Quadro FX 770M
(rev a1)
Subsystem: Dell Device 0250
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at f5000000 (32-bit, non-prefetchable) [size=16M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
Memory at f2000000 (64-bit, non-prefetchable) [size=32M]
I/O ports at df00 [size=128]
[virtual] Expansion ROM at f4000000 [disabled] [size=512K]
Capabilities: <access denied>
Kernel driver in use: nvidia
Kernel modules: nvidia, nvidiafb
---------------------------
# cat /proc/mtrr
reg00: base=0x000000000 ( 0MB), size=32768MB, count=1: write-back
reg01: base=0x0e0000000 ( 3584MB), size= 512MB, count=1: uncachable
--
Kubuntu Jaunty 64 bits hangups often with nvidia-glx-180
https://bugs.launchpad.net/bugs/363672
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to nvidia-graphics-drivers-180 in ubuntu.
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