Bug 8102 - kudzu doesn't appear to like shared IRQs
kudzu doesn't appear to like shared IRQs
Status: CLOSED DEFERRED
Product: Red Hat Linux
Classification: Retired
Component: kudzu (Show other bugs)
6.1
i386 Linux
medium Severity medium
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Assigned To: Bill Nottingham
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Depends On:
Blocks:
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Reported: 2000-01-01 22:56 EST by Gregory Leblanc
Modified: 2014-03-16 22:11 EDT (History)
2 users (show)

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Doc Type: Bug Fix
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Last Closed: 2000-02-14 18:26:05 EST
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Description Gregory Leblanc 2000-01-01 22:56:01 EST
I recently installed RH6.1 on a home PC that's chock full of cards.  I had
my Intel 82557 based NIC configured to share an IRQ with my AHA-3940UW.  It
seems that kudzu couldn't handle this, as it never found my NIC.  When I
moved things around to put that card on it's own IRQ, it seemed to be
detected and work properly.  I shuffeled things around again, and with
Donal Beckers help, got my NIC working with a shared IRQ, and kept my other
devices running.  I can probably reproduce this problem by installing RH6.1
on another partition, and I can provide a full hardware list upon request.
Comment 1 Bill Nottingham 2000-01-03 11:09:59 EST
When they're set to share an IRQ, what does 'lspci' say?
Comment 2 Gregory Leblanc 2000-01-03 21:50:59 EST
[gleblanc@peecee gleblanc]# lspci
00:00.0 Host bridge: Acer Laboratories Inc. M1541 (rev 04)
00:01.0 PCI bridge: Acer Laboratories Inc. M5243 (rev 04)
00:02.0 USB Controller: Acer Laboratories Inc. M5237 (rev 03)
00:07.0 ISA bridge: Acer Laboratories Inc. M1533 (rev b4)
00:0e.0 Ethernet controller: Intel Corporation 82557 (rev 01)
00:0f.0 IDE interface: Acer Laboratories Inc. M5229 (rev 20)
00:12.0 PCI bridge: Digital Equipment Corporation DECchip 21050 (rev 02)
01:00.0 VGA compatible controller: ATI Technologies Inc 215GB [Mach64 GB] (rev
5c)
02:04.0 SCSI storage controller: Adaptec AIC-7882U
02:05.0 SCSI storage controller: Adaptec AIC-7882U
[gleblanc@peecee gleblanc]#

Don't understand it all, but there it is.
Comment 3 Bill Nottingham 2000-01-18 11:57:59 EST
Odd, it appears there in the PCI scan, so it should show up
in the probe. I take it this is completely repeatable?

Did the installer detect the nic?
Comment 4 Gregory Leblanc 2000-01-18 12:04:59 EST
I repeated it with two or three attempts at installing RH6.1.  The installer did
not detect the NIC, but I was able to install it using both LinuxConf (ugly tool
that it is) and by editing the network startup scripts
(/etc/sysconf/network-scripts/).
Comment 5 Bill Nottingham 2000-02-08 17:51:59 EST
Is the only difference in /etc/sysconfig/hwconf between the
case where they do and don't share IRQs the fact that the
network card is missing, or are other entries missing as
well?
Comment 6 Bill Nottingham 2000-02-14 18:25:59 EST
There was a bug in the eepro driver in that it didn't like shared
IRQs; I believe this was fixed in the 2.2.14 kernel.
Comment 7 Bill Nottingham 2000-02-14 18:26:59 EST
Repoen if this persists.

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