Hi.
Sorry for my late reply,.. but I've been very busy this week (dozens of
new Sun Fires that hat to be installed, etc.) ;-)
Parag Warudkar wrote:
> It seems that your kernel is using IDE for your CDROM and libata for your
> other drives.
Yes it does.
> I recall having a similar problem with my laptop (DMA Disabled) when I had
> both IDE and SATA/PATA support enabled. I had to disable IDE altogether and
> let SATA/PATA drivers handle all my drives in order to get DMA on the CDROM.
>
While this is a good idea in general,.. I doubt that it will solve my
problem,...
First of all,.. if this was a driver related issue it wouldn't happen
under windows (which I booted solely for testing reasons ;) ), too,
would it?
Secondly,... it seems that the drive isn't even able to read the CD
in,.. I mean I think that this is a drive internal issue and the drive
simply tells the kernel "wait,.. haven't read in yet" or so.
I've also hat some errors like this:
hdb: irq timeout: status=0xd0 { Busy }
ide: failed opcode was: unknown
hdb: DMA disabled
hdb: ATAPI reset complete
hdb: irq timeout: status=0x80 { Busy }
ide: failed opcode was: unknown
hdb: ATAPI reset complete
hdb: irq timeout: status=0x80 { Busy }
ide: failed opcode was: unknown
hdb: cdrom_read_intr: data underrun (4 blocks)
end_request: I/O error, dev hdb, sector 7831400
Buffer I/O error on device hdb, logical block 1957850
hdb: tray open
end_request: I/O error, dev hdb, sector 7831404
Buffer I/O error on device hdb, logical block 1957851
Buffer I/O error on device hdb, logical block 1957852
Buffer I/O error on device hdb, logical block 1957853
Buffer I/O error on device hdb, logical block 1957854
Buffer I/O error on device hdb, logical block 1957855
Buffer I/O error on device hdb, logical block 1957856
Buffer I/O error on device hdb, logical block 1957857
Buffer I/O error on device hdb, logical block 1957858
Buffer I/O error on device hdb, logical block 1957859
hdb: tray open
end_request: I/O error, dev hdb, sector 7831656
hdb: tray open
end_request: I/O error, dev hdb, sector 7831400
hdb: tray open
end_request: I/O error, dev hdb, sector 7831400
hdb: tray open
end_request: I/O error, dev hdb, sector 7831400
hdb: tray open
and so on and so on.
That happened on a DVD (successfully read in and played by the drive),..
but when I pushed the eject button (while xine sill was playing) I got
those errors,..
I assume that xine continued to read data but the DVD was already
ejected and thus the request errors....
But I think there shouldn't be a request error but more something like
"no medium found" or the eject button should have been disabled at
all,... so I think something goes really wrong with that drive ;)
> Try and pass ide=noprobe option to the kernel boot command line and see if
> that makes a difference first - may be that will allow the SATA/PATA drivers
> to claim the CDROM before IDE sees it.
>
> If that won't work try and disable ATA/ATAPI/MFM/RLL support in your config
> and enable Serial ATA (prod) and Parallel ATA (experimental drivers) and
> select the right SATA drivers as built ins or modules (I think in your case
> it is going to be NVIDIA SATA support and/or AMD/Nvidia PATA support but I
> may be wrong). Then rebuild the kernel and see if your DVD drive has DMA and
> you can watch DVDs.
>
I'll do that,.. but I've already contacted my seller,.. and asked for a
new device :-) But in the meantime I can test for this stuff.
Does anyone have some answers about the following:
I had some problems with my system the last months,.. first of all the
powersupply died,.. and then I've found some data corruption problems
(see my posts here on lkml).
I think the powersupply was simply damaged,.. and I assume (correct me
if it may be likely) that nothing else was damaged when the powersupply
broke.
The data corruption error is quite sure not a hardware defect of my
system but more likely a issue that all nvidia chipset boards (or at
least many of them) have.... (see my threads here at lkml)
But the DVD/CD defect makes me nervous,...
Is it likely that something in my system is defect and the damage
propagates to other components and makes them defect too?
Best wishes,
Chris,
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