(sorry, resent to linux-ide without the html) On Mon, Aug 31, 2009 at 9:02 AM, Tejun Heo <tj@xxxxxxxxxx> wrote: > > > [ 6.312129] ata2.00: qc timeout (cmd 0xa1) > > [ 6.312135] ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4) > > [ 11.352006] ata2: link is slow to respond, please be patient (ready=0) > > [ 16.336009] ata2: device not ready (errno=-16), forcing hardreset > > [ 21.532007] ata2: link is slow to respond, please be patient (ready=0) > > [ 26.348009] ata2: SRST failed (errno=-16) > > [ 31.544008] ata2: link is slow to respond, please be patient (ready=0) > > [ 36.360014] ata2: SRST failed (errno=-16) > > [ 36.544307] ata2.00: ATAPI: ASUS DRW-2014L1T, 1.02, max UDMA/66 > > [ 36.560317] ata2.00: configured for UDMA/66 > > [ 36.576547] scsi 1:0:0:0: CD-ROM ASUS DRW-2014L1T > > 1.02 PQ: 0 ANSI: 5 > > "libata.force=2:udma33" would force it to udma/33 but I don't think > that would be the problem here. IDENTIFY doesn't use udma anyway. > Does the problem go away if you do "libata.force=2:pio0"? Thanks for the suggestion, but it didn't help. libata is setup as a module in Debian's kernel, so I created a /etc/modprobe.d/libata.conf with "options libata force=2:pio0" and rebuilt initrd. This appears to have properly registered the force flag, but it seems to have only been applied once the kernel worked through the issue with the controller/port: [ 3.985969] usbhid: v2.6:USB HID core driver [ 6.316130] ata2.00: qc timeout (cmd 0xa1) [ 6.316135] ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4) [ 11.356004] ata2: link is slow to respond, please be patient (ready=0) [ 16.340004] ata2: device not ready (errno=-16), forcing hardreset [ 21.536004] ata2: link is slow to respond, please be patient (ready=0) [ 26.352504] ata2: SRST failed (errno=-16) [ 31.548004] ata2: link is slow to respond, please be patient (ready=0) [ 36.364514] ata2: SRST failed (errno=-16) [ 36.548307] ata2.00: ATAPI: ASUS DRW-2014L1T, 1.02, max UDMA/66 [ 36.548323] ata2.00: FORCE: xfer_mask set to pio0 [ 36.564827] ata2.00: configured for PIO0 [ 36.565669] scsi 1:0:0:0: CD-ROM ASUS DRW-2014L1T 1.02 PQ: 0 ANSI: 5 I'm not sure if this is due to a modular libata or if that's just the way it is with this particular problem.. > Thanks. > > -- > tejun > Thanks, Mike -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
