Ubuntu
linux package

  1. Bug #344183
  2. Comment #11

Comment 11 for bug 344183

Revision history for this message
Teemu Kiviniemi (teemuki) wrote :

The problem can be reproduced without suspending. Disk I/O during power changes triggers the problem.

1. Start heavy disk I/O in the background: sudo dd if=/dev/sda of=/dev/null bs=131072

2. Start vmstat to monitor disk I/O: vmstat 1

3. Plug/unplug the AC adapter a couple of times.

4. Vmstat shows that the amount of disk I/O drops to zero.

5. The previously reported ATA error messages appear to kernel log, But this time the system recovers after ata1 soft reset.

When the AC adapter is not unplugged, no problems appear during disk I/O.