At installation time, Linux finds my SCSI card (Adaptec AHA-2940U2W),
tries to initialize it, then it resets
the card due to timeout, no matter what method I choose for
installation.
In "normal" mode, if I go to the third virtual terminal (CTRL+ALT+F3) I
can read:
* probing buses
* finished bus probing
* found suggestion of aic7xxx
* found aic7xxx device
* found devices justProbe is 0
* going to insmod aic7xxx.o (path is NULL),

and in "expert"mode I read:
* 65 keymaps are available
* loaded 9 keymap tables
* trying to mount device hda
* going to insmod aic7xxx.o (path is NULL),

while in the fourth terminal (CTRL+ALT+F4) the messages are (either
mode):
<6> (SCSI 0) downloading sequencer code...374 instructions
<4> SCSI 0: Adaptec AHA-2940U2W...
<4> scsi: 1 host
<4> scsi: aborting command due to timeout: pid 0, SCSI 0, channel 0, id
0, lun 0
Test Unit Ready 00 00 00 00 00
<4> SCSI host 0 abort (pid 0) timed out-resetting
<4> SCSI bus is being reset for host 0 channel 0
<4> SCSI host 0 channel 0 reset (pid 0) timed out-trying harder
<4> SCSI host 0 abort (pid 0) timed out-resetting
<4> SCSI bus is being reset for host 0 channel 0
<4> SCSI host 0 channel 0 reset (pid 0) timed out-trying harder
<4> SCSI host 0 abort (pid 0) timed out-resetting
<4> SCSI bus is being reset for host 0 channel 0
<4> SCSI host 0 channel 0 reset (pid 0) timed out-trying harder
....
and it gets into a loop.

I am trying to put RH Linux on my machine for almost a month by now. In
order to verify if there is an IRQ
conflict, I have removed everything from the computer, except for the
keyboard, the video card, and the
SCSI card itself. If I don't have any hard disks connected to the SCSI
card, the error messages are:
<4> detected 1 host
<4>scsi: aborting command due to timeout: pid0, scsi0, channel0, id0,
lun0
Test Unit Ready 00 00 00 00 00
<4>scsi host0 abort (pid0) timed out-resseting
<4>scsi bus is being reset for host0 channel0
Oops:0000
CPU:0
EIP:0010:[<c4808d9f>]
EFLAGS:00010046
eax:00001074 ebx:c0fffe00 ecx:c3993078 edx:00000000
esi:c3993078 edi:00000000 epb:c481b000 esp:c01f1e94
ds:0018 es:0018 ss:0018
Process swapper(pid:0, process nr:0, stack package:c01f1000)
Stack: c3993078 0000000b c48119f5 c39930ff 0e993078 000000ff c3993078
c0fffe00 00000000 00000000 c3993000 c0fffe00 00000246 c3993000 c0fffe00
c4809bf1 c3993078 00000004 c3993078 00000246 c01f1f68 0000000b 00000001
00000004
Call Trace:[<c48119f5>] [<c4809bf1>] [<c4809c29>] [<c0108a0e>]
[<c01087e4>]
[<c0116639>] [<c0108b13>] [<c0107b24>] [<c010634d>] [<c0106000>]
[<c0106370>] [<c0107a88>] [<c0106000>] [<c0106077>] [<c0106000>]
[<c0100176>]
Code: 8b 47 04 0f b6 58 40 0f b6 50 42 c1 e2 03 09 d3 8d 96 e0 00
Aiee, killing interrupt handler
Kernel panic: Attempted to kill the idle task!
In swapper task-not syncing

At this moment the system halts, and the only way to get out is to
reboot.
I have tested the card in all kind of Windows flavors (95/98/NT), I have
installed Windows 98, then NT on
the SCSI HDD ,and it worked without a problem.

Steps I took towards fixing the problem:
- removed any peripheral attached to the SCSI card
- tried to make SCSI card's BIOS to "see" only SCSI ID#0 and the ZIP
drive
- removed ZIP drive, only SCSI HDD attached
- installed other OS's (Windows 98, Windows NT 4.0 Server) on SCSI HDD
- disable IDE buses on the motherboard (in BIOS) one by one
- moved the SCSI card on each of the 4 PCI slots
- removed IDE HDD's
- disable almost all integrated peripherals in motherboard's BIOS
- removed all peripherals (including the PS/2 mouse), excepting the
keyboard, the video card, and the SCSI
card.
- check system's resources in Windows 98/NT to see if there is any
IRQ/IO port conflict (it wasn't)
- installed Linux on one of the IDE hard disks, then try to "see" SCSI
card, even issued the command
insmod aic7xxx (which, by-the-way, locked the system)

My system has the following configuration:

AMD K6-266MHz, 64MB SDRAM (one DIMM), VIA V2 chipset with 1MB cache, FIC

PA-2007 motherboard (rel 1.2), Matrox Millenium II w/ 8MB WRAM, Sound
Blaster Live!, Diamond
Supra modem, two Western Digital HDD's on IDE 1 (2.5MB, UDMA-2, and
3.1MB),IDE CD-ROM on
IDE 2, ZIP drive (ID#6) and Seagate Cheetah ST 34502LW (Ultra2 Wide-LVD,
68 pins, 4.5 GB, SCSI ID
#0) connected to the SCSI controller. The BIOS assigns IRQ 11 and I/O
port 6200h for the SCSI, or other
IRQ (and the same I/O port) if I move the card to another PCI slot.

Please help me solve the problem and have Linux installed again on my
machine!

Thank you.

Ferdi Badescu


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