[mythtv-users] Guide, and DMA problems

[Cyber Source]

I would disable your DMA settings in your BIOS for the drive attached as 
a slave on your second IDE channel (hdd). Something is either wrong with 
the drive/BIOS/mobo/kernel.

Ben Curtis wrote:

>Man I can't get this right.  Third time I've tried to send this because my 
>from address keeps messing up.  Finally got it to stick in there.
>
>Problem 1, guide:
>Can I turn off .15's OSD menu so M goes straight to the guide again?
>
>
>Problem 2, DMA:
>So I started getting random lockups pretty frequently a few days ago.  
>Seems to happen when nothings been recorded in a while and the system
>starts to record.  The error is almost always DMA related in
>/var/log/messages:
>
>
>May 28 11:42:56 myth kernel: hdd: timeout waiting for DMA
>May 28 11:42:56 myth kernel: hdd: timeout waiting for DMA
>May 28 11:42:56 myth kernel: hdd: (__ide_dma_test_irq) called while not 
>waiting
>May 28 11:42:56 myth kernel: hdd: status error: status=0x7f { DriveReady 
>DeviceFault SeekComplete DataRequest CorrectedError
>May 28 11:42:56 myth kernel: hdd: status error: error=0x7f { 
>DriveStatusError UncorrectableError SectorIdNotFound TrackZeroN
>May 28 11:42:56 myth kernel: hdc: DMA disabled
>
>or
>
>May 28 01:29:51 myth kernel: hdd: dma_timer_expiry: dma status == 0x61
>
>
>That first error only shows it disabling dma on hdc, but it actually does
>it on both drives.  I've read a lot on disabling apic using noapic and
>nolapic at boot time, but from my cat /proc/interrupts I see it's not
>using apic (XT-PIC instead of IO-APIC) (nForce2 chipset):
>
>  0:      30907          XT-PIC  timer
>  1:          6          XT-PIC  keyboard
>  2:          0          XT-PIC  cascade
>  4:        111          XT-PIC  serial
>  5:      35391          XT-PIC  nvidia
>  8:          1          XT-PIC  rtc
>  9:      29648          XT-PIC  ivtv: iTVC15/16 mpg2 encoder chip
> 11:       2577          XT-PIC  eth0, NVIDIA nForce Audio
> 12:         58          XT-PIC  PS/2 Mouse
> 14:      11432          XT-PIC  ide0
> 15:       2990          XT-PIC  ide1
>NMI:          0 
>ERR:        123
>
>I tried adding them anyway, and still get problems.
>
>Also, I've noticed that the drive only uses udma2 instead of udma5 from 
>doing an hdparm -I.  Should I try to enable udma5 (and how?)?  I've just 
>tried lowering video res to 480x480 and dropping audio quality to try to 
>lower disk access.
>
>Any other ideas would be helpful.
>
>Thanks!
>Ben
>
>
>
>
>
>  
>
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>
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