My problem began after a Feisty update as well. Try booting into recovery mode and running e2fsck on each partition. Then add the kernel options acpi=off pci=bios That seems to have got my system working again. I did some tests last night and could boot with acpi=off but without the option I had problems. I have also noticed some hard disk corruption now as well. The same disk worked with no problems when I booted using an old knoppix disk. So I conclude there is a problem somewhere between the libata driver and the hardware.
Florian Schmid wrote: > Some here on feisty after upgrading to latest Kernel 2.6.20-13-generic: > > [ 5249.792000] SCSI device sda: 156301488 512-byte hdwr sectors (80026 MB) > [ 5249.792000] sda: Write Protect is off > [ 5249.792000] sda: Mode Sense: 00 3a 00 00 > [ 5249.792000] SCSI device sda: write cache: enabled, read cache: enabled, > doesn't support DPO or FUA > [ 5519.372000] ata1.01: qc timeout (cmd 0xa0) > [ 5519.372000] ata1.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 > frozen > [ 5519.372000] ata1.01: cmd a0/00:00:00:00:20/00:00:00:00:00/b0 tag 0 cdb 0x0 > data 0 > [ 5519.372000] res 51/20:03:00:00:00/00:00:00:00:00/b0 Emask 0x5 > (timeout) > [ 5526.372000] ata1: port is slow to respond, please be patient (Status 0xd1) > [ 5549.388000] ata1: port failed to respond (30 secs, Status 0xd1) > [ 5549.388000] ata1: soft resetting port > [ 5549.740000] ata1.00: configured for UDMA/33 > [ 5549.920000] ata1.01: configured for UDMA/33 > [ 5549.920000] ata1: EH complete > > -- Hard disk I/O randomly freezes when hald is running and optical drive is empty https://launchpad.net/bugs/84603 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs