Switching Video Cards

Conor Klecker conor at ronoc.net
Thu Nov 8 22:45:59 UTC 2012

A success!

Right away after the install, Ubuntu found my video card and wanted to
install the driver. But since I downloaded the .run file of the latest
version of the NVIDIA drivers:

I wanted to hand install it. So I had to log out of X session, but the
installer said that it the pre-install script failed. I read the
pre-install script:

# Trigger an error exit status to prevent the installer from overwriting
# Ubuntu's nvidia packages.
exit 1

So I think that is just fine. I skipped the error the next time it popped
up. Then I got a message saying the computer was still using another driver
and if it wanted it to block it out. With this:
mythman at hp64myth:/etc/modprobe.d$ cat nvidia-installer-disable-nouveau.conf
# generated by nvidia-installer
blacklist nouveau
options nouveau modeset=0
Then reboot to let that take effect
I was then able to install the driver, I let it update my Xorg files.
Set MythTV to use VDPAU High,
And now, when I playback an encoded blu-ray file (h264 mkv) that would
choke about every 15 sec and use 95-100% CPU looks like this:

CPU[|||                       5.4%]     Tasks: 73, 106 thr; 1 running
  Mem[||||||||||          456/3010MB]     Load average: 0.32 0.24 0.15
  Swp[                      0/2555MB]     Uptime: 00:08:00

  PID USER      PRI  NI  VIRT   RES   SHR S CPU% MEM%   TIME+  Command

 1436 mythman    20   0 1420M  311M 58196 S  4.0 10.3  1:15.06
 1579 mythman    20   0 1420M  311M 58196 S  2.0 10.3  0:18.71
 1831 mythman    20   0 24360  1912  1356 R  2.0  0.1  0:03.80 htop

Thanks for the help
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