Need a little troubleshooting/conceptual direction here: so I pop a
video into my DVD player and it plays slightly choppy in both Xine and
Totem. I make a copy with DVD backup and it plays back perfectly
straight from the hard disk. Mmm-kay. So the first thing that comes to
mind is DMA for my DVD drive isn't working. Sure enough, during DVD
playback, when I watch the light for my hard disk, it is always
flashing. Funny thing is, according to the following output, DMA is
fully enabled and functioning. What gives?
Kernel Options:
[*] Generic PCI bus-master DMA
support
[ ] Force enable legacy 2.0.X HOSTS to use
DMA
[*] Use PCI DMA by default when
available
[ ] Enable DMA only for disks
_________________________________________
64funky:/usr/src/linux# hdparm -i /dev/hdc
/dev/hdc:
Model=AOPEN COM5224/AAH, FwRev=1.01, SerialNo=
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=on/off, tPIO={min:227,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2
AdvancedPM=no
* signifies the current active mode
___________________________________________
64funky:/usr/src/linux# hdparm -d 1 /dev/hdc
/dev/hdc:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)
____________________________________________
cat /proc/pci:
...
Bus 2, device 0, function 0:
VGA compatible controller: ATI Technologies Inc RV280 [Radeon 9200
SE] (rev 1).
IRQ 12.
Master Capable. Latency=32. Min Gnt=8.
Prefetchable 32 bit memory at 0xc0000000 [0xcfffffff].
I/O at 0xc000 [0xc0ff].
Non-prefetchable 32 bit memory at 0xd1000000 [0xd100ffff].
_____________________________________________
ejahn@64funky:~$ xvinfo
X-Video Extension version 2.2
screen #0
Adaptor #0: "ATI Radeon Video Overlay"
number of ports: 1
port base: 69
operations supported: PutImage
supported visuals:
depth 24, visualID 0x23
depth 24, visualID 0x24
depth 24, visualID 0x25
depth 24, visualID 0x26
depth 24, visualID 0x27
depth 24, visualID 0x28
depth 24, visualID 0x29
depth 24, visualID 0x2a
depth 24, visualID 0x2b
depth 24, visualID 0x2c
depth 24, visualID 0x2d
depth 24, visualID 0x2e
depth 24, visualID 0x2f
depth 24, visualID 0x30
depth 24, visualID 0x31
depth 24, visualID 0x32
number of attributes: 12
"XV_SET_DEFAULTS" (range 0 to 1)
client settable attribute
"XV_AUTOPAINT_COLORKEY" (range 0 to 1)
client settable attribute
client gettable attribute (current value is 1)
"XV_COLORKEY" (range 0 to -1)
client settable attribute
client gettable attribute (current value is 1050369)
"XV_DOUBLE_BUFFER" (range 0 to 1)
client settable attribute
client gettable attribute (current value is 1)
"XV_BRIGHTNESS" (range -1000 to 1000)
client settable attribute
client gettable attribute (current value is 0)
"XV_CONTRAST" (range -1000 to 1000)
client settable attribute
client gettable attribute (current value is 0)
"XV_SATURATION" (range -1000 to 1000)
client settable attribute
client gettable attribute (current value is 0)
"XV_COLOR" (range -1000 to 1000)
client settable attribute
client gettable attribute (current value is 0)
"XV_HUE" (range -1000 to 1000)
client settable attribute
client gettable attribute (current value is 0)
"XV_RED_INTENSITY" (range -1000 to 1000)
client settable attribute
client gettable attribute (current value is 0)
"XV_GREEN_INTENSITY" (range -1000 to 1000)
client settable attribute
client gettable attribute (current value is 0)
"XV_BLUE_INTENSITY" (range -1000 to 1000)
client settable attribute
client gettable attribute (current value is 0)
maximum XvImage size: 2048 x 2048
Number of image formats: 4
id: 0x32595559 (YUY2)
guid: 59555932-0000-0010-8000-00aa00389b71
bits per pixel: 16
number of planes: 1
type: YUV (packed)
id: 0x59565955 (UYVY)
guid: 55595659-0000-0010-8000-00aa00389b71
bits per pixel: 16
number of planes: 1
type: YUV (packed)
id: 0x32315659 (YV12)
guid: 59563132-0000-0010-8000-00aa00389b71
bits per pixel: 12
number of planes: 3
type: YUV (planar)
id: 0x30323449 (I420)
guid: 49343230-0000-0010-8000-00aa00389b71
bits per pixel: 12
number of planes: 3
type: YUV (planar)
-The Ghost of Jim Varney
-----------------------------------------------------------------------
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