This is the register dump when it works.
The pipe-A underruns can be seen in XorgLogOld.txt.
dmesg output when this happens: Dec 28 10:25:07 tick kernel: [ 5559.025081] mtrr: no MTRR for d0000000,10000000 found Dec 28 10:25:08 tick kernel: [ 5560.478087] apm: BIOS not found.
This is the register dump when it works.
The pipe-A underruns can be seen in XorgLogOld.txt.
dmesg output when this happens:
Dec 28 10:25:07 tick kernel: [ 5559.025081] mtrr: no MTRR for d0000000,10000000 found
Dec 28 10:25:08 tick kernel: [ 5560.478087] apm: BIOS not found.