Folks, as many of you I was plagued by the timeout issue, mostly when booting or resuming from standby/hibernate. I am running 8.10 on a Dell XPS M1330. I recently updated the kernel from 2.6.27-12 to 2.6.28-15 and since then the freeze occured more often. I followed the recommendations in this thread which did not cure the problem. I tried blacklisting ahci and use ata_piix in initramfs as well as switching from AHCI to ATA in BIOS. So it seems that the cause is not a fault in the ahci driver.
By chance I came across a similar discussion in the Nvidia forum. There it was suggested that problem might be due to having nvidia and ahci modules on the same IRQ, see http://www.nvnews.net/vbulletin/showthread.php?t=123583 and http://www.nvnews.net/vbulletin/showthread.php?t=126152. I followed the advice by zkmyth to ensure that nvidia does not have to share an interrupt, and this seem to have solved the problem (see attached /proc/interrupts). No freezes since then. ** Attachment added: "proc_interrupts.gz" http://launchpadlibrarian.net/31476227/proc_interrupts.gz -- ata timeout exception with ahci libata driver (was with 2.6.28-11, but i confirmed it affewcts previous kernels too) https://bugs.launchpad.net/bugs/352197 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
