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[Bart Rose <jbrose3@xxxxxxxxx>]

I removed my fix from above to see if this had been fixed for me in
subsequent updates and it has not. Here is my output with fixes removed:

bart@bart-laptop:~$ cat /proc/mtrr
reg00: base=0x0fffe0000 ( 4095MB), size=  128KB, count=1: write-protect
reg01: base=0x0fffc0000 ( 4095MB), size=  128KB, count=1: uncachable
reg02: base=0x000000000 (    0MB), size=  512MB, count=1: write-back
reg03: base=0x020000000 (  512MB), size=  512MB, count=1: write-back
reg04: base=0x03f800000 ( 1016MB), size=    8MB, count=1: uncachable
reg05: base=0x03f600000 ( 1014MB), size=    2MB, count=1: uncachable
reg06: base=0x03f500000 ( 1013MB), size=    1MB, count=1: uncachable
reg07: base=0x000000000 (    0MB), size=  128KB, count=1: uncachable

bart@bart-laptop:~$ dmesg | grep MTRR
[    0.000000] MTRR default type: uncachable
[    0.000000] MTRR fixed ranges enabled:
[    0.000000] MTRR variable ranges enabled:
[   14.065032] mtrr: no more MTRRs available
[   14.065042] [drm] MTRR allocation failed.  Graphics performance may suffer.


Tom, which graphics chipset are you using? Mine is a GME945.

-- 
[i915GM] MTRR entry gets removed when restarting xorg - causes corruption on ttys
https://bugs.launchpad.net/bugs/314928
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