I get this problem also on a: 00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA Controller (rev 02) on a dell dimension 8300. Using; ii linux-image-2.6.20-12-generic 2.6.20-12.20
The boot would hang giving the following messages. I can speed it up by opening and closing the CDROM drives a few times. I fixed it by recompiling the ata_piix driver from source using the patch I found at: http://lkml.org/lkml/2007/3/4/259 Hope you include it or another fix in edge. Thanks for the good work. [ 66.302321] ata2.01: qc timeout (cmd 0xef) [ 66.302380] ata2.01: failed to set xfermode (err_mask=0x4) [ 66.302432] ata2: failed to recover some devices, retrying in 5 secs [ 72.112049] ata2.00: configured for UDMA/33 [ 102.037474] ata2.01: qc timeout (cmd 0xef) [ 102.037531] ata2.01: failed to set xfermode (err_mask=0x4) [ 102.037584] ata2.01: limiting speed to UDMA/33:PIO3 [ 102.037635] ata2: failed to recover some devices, retrying in 5 secs [ 107.847204] ata2.00: configured for UDMA/33 [ 137.772631] ata2.01: qc timeout (cmd 0xef) [ 137.772687] ata2.01: failed to set xfermode (err_mask=0x4) [ 137.772739] ata2.01: disabled [ 137.772787] ata2: failed to recover some devices, retrying in 5 secs [ 142.768212] ata2.00: failed to set xfermode (err_mask=0x40) [ 142.768268] ata2: failed to recover some devices, retrying in 5 secs [ 148.422327] ata2.00: configured for UDMA/33 -- 2.6.20-10 regression from 2.6.20-9, Macbook Pro no longer boots https://launchpad.net/bugs/91940 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
