Public bug reported:
Hi,
I installed Ubuntu Hardy on a Compaq Presario R4206EA (R4000 series)
which had Edgy on another partition. This laptop has a DVD-RW burner
which works fine under Edgy, however the DMA activation and 32 bits IO
support fail under Hardy. The immediate consequence is that it is
impossible to watch a DVD on it (too jerky), and that it takes 3h20 to
burn a 3.5GB data DVD…
Here is the output of hdparm under Hardy :
------------------------------- 8< -------------------------------
$ sudo hdparm /dev/cdrom (seen as /dev/scd0)
/dev/cdrom:
IO_support = 0 (default)
16-bit)
HDIO_GET_UNMASKINTR failed: Inappropriate ioctl for device
HDIO_GET_DMA failed: Inappropriate ioctl for device
HDIO_GET_KEEPSETTINGS failed: Inappropriate ioctl for device
readonly = 0 (off)
readahead = 256 (on)
HDIO_GETGEO failed: Inappropriate ioctl for device
------------------------------- 8< -------------------------------
Same under Edgy :
------------------------------- 8< -------------------------------
$ sudo hdparm /dev/hdc
/dev/hdc:
IO_support = 1 (32-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
HDIO_GETGEO failed: Inappropriate ioctl for device
------------------------------- 8< -------------------------------
Here are the capabilities of the burner (same output in both versions) :
------------------------------- 8< -------------------------------
$ sudo hdparm -i /dev/cdrom
/dev/cdrom:
Model=TSSTcorpCD/DVDW TS-L532R , FwRev=HA05 ,
SerialNo=454F208147
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=2048kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 *mdma2
AdvancedPM=no
Drive conforms to: ATA/ATAPI-7 T13 1532D revision 1: ATA/ATAPI-3,4,5,6,7
* signifies the current active mode
------------------------------- 8< -------------------------------
And then, under Hardy :
------------------------------- 8< -------------------------------
$ sudo hdparm -c1 -d /dev/cdrom
/dev/cdrom:
setting 32-bit IO_support flag to 1
HDIO_SET_32BIT failed: Invalid argument
IO_support = 0 (default)
16-bit)
HDIO_GET_DMA failed: Inappropriate ioctl for device
------------------------------- 8< -------------------------------
I used to boot Edgy on a customed 2.6.20 kernel for other reasons. I use
Hardy's default one. I cannot perform any other tests on Edgy because I already
formated it (may have the kernel config somewhere if needed though). Please
find verbose lspci, dmidecode and lshw output in attachment. Forgot dmesg, I
will send it asap (laptop not available now).
I was in a hurry and didn't have much time to perform tests on the hard
drive. I think it has the same kind of problems, but I don't remember
well and am thus not sure. I will communicate about it when available
(not before one month though…).
Possibly related reports, at least : #205817, #216878, #224561, #221455,
#221455, #135473, #136506, #155511…
** Affects: ubuntu
Importance: Undecided
Status: New
--
[Hardy] No DMA nor 32bits IO support anymore
https://bugs.launchpad.net/bugs/228302
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