andrea gelmini wrote:
Hardware: Toshiba Satellite P20 (P4-3200 MHz, 512MB RAM) [1]
Software: Debian Unstable
GCC: 3.4.5 [2]
Memtest86+: v.1.60 (stress tools, CPU/RAM and so on, are all happy)
Problem: with kernel <=2.6.10 everything is all right...
but with any kernel released after 2.6.10 (pre, rc, stable, mm, and
so on), I've got this:
hda: dma_timer_expiry: dma status == 0x21
hda: DMA timeout error
hda: dma timeout error: status=0xd0 { Busy }
[...]
It happen quickly if I do also something like this:
cd /proc/sys/vm
echo 100 > dirty_background_ratio
echo 1000000 > dirty_expire_centisecs
echo 100 > dirty_ratio
echo 1000000 > dirty_writeback_centisecs
I've had a report about this before, from someone who was using laptop
mode -- same error message. Funny thing is, the laptop mode tools
scripts also modify the above values, so it's probably the same problem.
Until now I thought it was a Thinkpad hardware problem, because I only
heard about these problems on Thinkpads, but apparently it's a kernel
problem after all. Don't know anything about the causes though.
--Bart
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