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    SubjectRe: cd/dvd inaccessible in 2.6.24-rc2
    On Sat, 10 Nov 2007 14:49:23 -0800
    Andrew Morton <akpm@linux-foundation.org> wrote:

    > On Sat, 10 Nov 2007 15:27:11 +1100 Will Trives <will@trivescon.com.au> wrote:
    >
    > >
    > > Hello,
    > >
    > > Motherboard: Gigabyte GA-P35-DS4 (rev. 1.1)
    > > Chipset: Intel P35 + ICH9R
    > > PATA port runs off JMicron controller
    > > CD/DVD Device: BENQ DW1640 16X
    > >
    > > I cannot access my dvd burner under 2.6.24-rc2, I have no problems under
    > > 2.6.23. Basically the drive is detected OK, everything looks ok but as
    > > soon as I go to use it errors like this occur:

    Guess what - jmicron hasn't changed in this tree for ages 8(

    > > ata9.00: qc timeout (cmd 0xa0)
    > > ata9.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
    > > ata9.00: cmd a0/00:00:00:02:00/00:00:00:00:00/a0 tag 0 cdb 0x5a data 2
    > > in
    > > res 51/54:03:00:02:00/00:00:00:00:00/a0 Emask 0x5 (timeout)
    > > ata9.00: status: { DRDY ERR }

    Could be an IRQ/ACPI regression, and in fact to me it looks more like
    that, than an IDE one. Probably worth trying the various IRQ routing
    options and seeing if they help.


    Alan
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