As this seems more active, I crosspost from here: https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/137470/comments/26 Hi all, I need to disappoint some of you: Dell Vostro 1700 with a Seagate ST980813ASG Suggested fix in https://wiki.ubuntu.com/InstallingUbuntuOnADellVostro1700 was to turn off NCQ by piping "1" into /sys/block/sda/device/queue_depth I did this. Also I upgraded to 2.6.24 as explained here: http://axebase.net/blog/?p=178 (uses a script "hardy.py") > uname -a > Linux vostroxx 2.6.24-8-generic #1 SMP Thu Feb 14 20:40:45 UTC 2008 i686 GNU/Linux The problem first occurred to be gone but after about half an hour of working it appeared again (see below). What should I do now? I remember to see a patch where NCQ was turned off for ST980813AS in the kernel 2.6.24. But I do have a "ST980813ASG" (note the appended "G"). But then, I have turned off NCQ anyway by piping "1" into /sys/block/sda/device/queue_depth, didn't I? Do I (and others) experience a wholly different problem here? <--- snip from /var/log/dmesg ---> [ 1866.716836] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x44 (timeout) [ 1866.716857] ata3: hard resetting link [ 1867.352238] ata3: port is slow to respond, please be patient (Status 0x80) [ 1867.867169] ata3: hard resetting link [ 1867.917645] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [ 1867.919637] ata3.00: configured for UDMA/133 [ 1867.919665] ata3: EH complete [ 1868.035436] sd 2:0:0:0: [sda] 156301488 512-byte hardware sectors (80026 MB) [ 1868.035580] sd 2:0:0:0: [sda] Write Protect is off [ 1868.038246] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 2371.992310] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x44 (timeout) [ 2371.992338] ata3: hard resetting link [ 2372.630043] ata3: port is slow to respond, please be patient (Status 0x80) [ 2373.098527] ata3: hard resetting link [ 2373.142150] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [ 2373.144818] ata3.00: configured for UDMA/133 [ 2373.144845] ata3: EH complete [ 2373.145047] sd 2:0:0:0: [sda] 156301488 512-byte hardware sectors (80026 MB) [ 2373.145089] sd 2:0:0:0: [sda] Write Protect is off [ 2373.145248] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 2398.484827] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x44 (timeout) [ 2398.484859] ata3: hard resetting link [ 2401.190281] ata3: port is slow to respond, please be patient (Status 0x80) [ 2403.768282] ata3: hard resetting link [ 2404.092050] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [ 2404.094618] ata3.00: configured for UDMA/133 [ 2404.094636] ata3: EH complete [ 2404.094818] sd 2:0:0:0: [sda] 156301488 512-byte hardware sectors (80026 MB) [ 2404.094859] sd 2:0:0:0: [sda] Write Protect is off [ 2404.095068] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 2558.474374] res 50/00:00:5e:32:04/00:00:00:00:00/e0 Emask 0x50 (ATA bus error) [ 2558.474405] ata3: hard resetting link [ 2559.612860] ata3: port is slow to respond, please be patient (Status 0x80) [ 2560.043102] ata3: hard resetting link [ 2560.086261] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [ 2560.088424] ata3.00: configured for UDMA/133 [ 2560.088451] ata3: EH complete [ 2560.104320] sd 2:0:0:0: [sda] 156301488 512-byte hardware sectors (80026 MB) [ 2560.104380] sd 2:0:0:0: [sda] Write Protect is off [ 2560.107262] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 2606.114442] ata3: limiting SATA link speed to 1.5 Gbps [ 2606.114489] res 40/00:00:5e:32:04/00:00:00:00:00/e0 Emask 0x44 (timeout) [ 2606.114520] ata3: hard resetting link [ 2606.684975] ata3: port is slow to respond, please be patient (Status 0x80) [ 2607.209738] ata3: hard resetting link [ 2607.309510] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 310) [ 2607.312180] ata3.00: configured for UDMA/133 [ 2607.312209] ata3: EH complete [ 2607.312724] sd 2:0:0:0: [sda] 156301488 512-byte hardware sectors (80026 MB) [ 2607.313137] sd 2:0:0:0: [sda] Write Protect is off [ 2607.331068] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA <--- snap from /var/log/dmesg ---> TIA Andre