Re: lost interrupt

From: Tomasz Rola (
Date: Tue May 07 2002 - 21:36:18 EST

Hash: SHA1

On Tue, 7 May 2002, mikeH wrote:

> Sorry if this is a repeat, I didn't see my last post come through...
> I'm being plauged with "hdX: lost interrupt" messages and resultant
> system hangs in kernel 2.4.18 on a via 82XXXX chipset.

I may not be the right person to answer but I had same problem (same via,
same kernel, same interrupt). It helped when I turned unmasking off, i.e.

hdparm -u0 /dev/hdX for every X in existing disks you have problems with.

Actually I did some dirty trick too, cause I have UDMA enabled by default
and compiled in via specific settings in kernel config, while at the same
time I set dma off during init, so I do:

hdparm -d0a0u0 /dev/ide/host0/bus0/target0/lun0/disc (or /dev/hda).

I think -u0 is sufficient but you may try the other command too. My
current dirty tricks are overreaction to problems with UDMA few kernels
(and years) ago so the second command is for paranoids.


- --
** A C programmer asked whether computer had Buddha's nature. **
** As the answer, master did "rm -rif" on the programmer's home **
** directory. And then the C programmer became enlightened... **
** **
** Tomasz Rola **

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