Comment 59 for bug 314928

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