I've a problem with my ATAPI CDROM. When installing Linux from CD
(S.u.S.E), it is _very_ slow when unpacking large files. And
/var/log/messages is full of the following:
May 7 19:09:10 pcgp kernel: hdb: irq timeout: status=0x58
May 7 19:09:10 pcgp kernel: hdb: ATAPI reset complete
May 7 19:09:21 pcgp kernel: hdb: irq timeout: status=0x58
May 7 19:09:21 pcgp kernel: hdb: ATAPI reset complete
May 7 19:09:31 pcgp kernel: hdb: irq timeout: status=0x58
May 7 19:09:31 pcgp kernel: hdb: ATAPI reset complete
May 7 19:09:41 pcgp kernel: hdb: irq timeout: status=0x58
May 7 19:09:41 pcgp kernel: hdb: ATAPI reset complete
it seems I get a few CDROM accesses then something goes wrong and ends in
a timeout after 10 seconds or so. And throughput is about 40 minutes for
30 megs :-(, measured when installing XFree sources. When installing small
packages (with S.u.S.E.'s YaST) it runs fine, and I'm quite sure
it's correctly cabled.
The following is my configuration from hdparm -i:
/dev/hda:
Model=ST51080A, FwRev=09.09.01, SerialNo=EAB64847
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=2100/16/63, TrkSize=65535, SectSize=987, ECCbytes=4
BuffType=3(DualPortCache), BuffSize=256kB, MaxMultSect=32, MultSect=off
DblWordIO=no, maxPIO=2(fast), DMA=yes, maxDMA=0(slow)
CurCHS=2100/16/63, CurSects=2116800, LBA=yes, LBAsects=2116800
tDMA={min:120,rec:120}, DMA modes: sword0 sword1 sword2 *mword0 mword1 mword2
IORDY=yes, tPIO={min:180,w/IORDY:120}, PIO modes: mode3 mode4
/dev/hdb:
Model=GCD-R580B, FwRev=1.05, SerialNo=
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=0(?), BuffSize=4kB, MaxMultSect=0
DblWordIO=no, maxPIO=2(fast), DMA=yes, maxDMA=2(fast)
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
tDMA={min:150,rec:200}, DMA modes: *sword0 *sword1 *sword2 *mword0 *mword1
IORDY=on/off, tPIO={min:180,w/IORDY:180}, PIO modes: mode3
This has happened with 2.0.18, 2.0.28 and 2.0.29.
Any idea ? I'm not in a hurry, but installations are truly slow.
Brief hardware description (I can give more details if necessary):
P-133 32 Mb, Intel Natoma/Triton II chipset, ATI Mach64, Ethernet 3Com 3C595,
SCSI AH152x+1Gb IBM DPES31080.
Gabriel.