Thanks! Fixed my jerky flash videos.
lspci -v
this gives me 2 entries to my video card amongst others, its the first
one I need which tells me the memory region (Memory at d0000000 (32-bit,
prefetchable) [size=256M])
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS,
943/940GML Express Integrated Graphics Controller (rev 03)
Subsystem: Dell Device 0201
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at eff00000 (32-bit, non-prefetchable) [size=512K]
I/O ports at eff8 [size=8]
Memory at d0000000 (32-bit, prefetchable) [size=256M]
Memory at efec0000 (32-bit, non-prefetchable) [size=256K]
Capabilities: <access denied>
Kernel modules: intelfb
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML
Express Integrated Graphics Controller (rev 03)
Subsystem: Dell Device 0201
Flags: bus master, fast devsel, latency 0
Memory at eff80000 (32-bit, non-prefetchable) [size=512K]
Capabilities: <access denied>
my mtrr before:
:~$ cat /proc/mtrr
reg00: base=0x000000000 ( 0MB), size= 2048MB, count=1: write-back
reg01: base=0x07f800000 ( 2040MB), size= 8MB, count=1: uncachable
reg02: base=0x07f700000 ( 2039MB), size= 1MB, count=1: uncachable
I then use the memory region I obtained before and enter
sudo -s
echo "base=0xd0000000 size=0x10000000 type=write-combining" > /proc/mtrr
AFTER:
reg00: base=0x000000000 ( 0MB), size= 2048MB, count=1: write-back
reg01: base=0x07f800000 ( 2040MB), size= 8MB, count=1: uncachable
reg02: base=0x07f700000 ( 2039MB), size= 1MB, count=1: uncachable
reg03: base=0x0d0000000 ( 3328MB), size= 256MB, count=2: write-combining
tada!
Fixed, thanks everyone
--
[i915GM] MTRR entry gets removed when restarting xorg - causes corruption on
ttys
https://bugs.launchpad.net/bugs/314928
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