Bug 151382

Summary: kernel-smp hangs, screen goes blank while loading audio modules
Product: [Fedora] Fedora Reporter: Tom Wood <woodt>
Component: kernelAssignee: Dave Jones <davej>
Status: CLOSED CURRENTRELEASE QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 4CC: pfrields, wtogami
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: 2.6.12-1_1390_FC4 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2005-08-08 18:16:30 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
lspci -v from this machine
none
lshal from this machine
none
lsmod before modprobing matroxfb-base
none
lsmod after modprobing matroxfb-base
none
stack trace of the failed "modprobe matroxfb_base" none

Description Tom Wood 2005-03-17 14:23:22 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.6) Gecko/20050302 Firefox/1.0.1 Fedora/1.0.1-1.3.2

Description of problem:
Boot process stops and screen goes blank when booting kernel-smp while running in /etc/rc.sysinit at "Initializing hardware" just after "audio" comes up.

There is no audio hardware in this machine.  It's a dual processor P III running on a Via 686 chipset (Abit VP6).

This machine ran fine under RH9 - FC3.  This is a fresh install of FC4t1.

System at this point hard locks, sysrq doesn't respond.

UP kernel works.

Version-Release number of selected component (if applicable):
kernel-smp-2.6.11-1.1177_FC4

How reproducible:
Always

Steps to Reproduce:
1. Boot the kernel-smp.
2. Watch system lock up.
3.
  

Actual Results:  Hard lock as described above

Expected Results:  System should have booted.

Additional info:

Comment 1 Tom Wood 2005-03-17 14:24:59 UTC
Created attachment 112092 [details]
lspci -v from this machine

Comment 2 Tom Wood 2005-03-17 14:25:53 UTC
Created attachment 112093 [details]
lshal from this machine

Comment 3 Tom Wood 2005-03-17 21:34:19 UTC
*** Bug 151418 has been marked as a duplicate of this bug. ***

Comment 4 Tom Wood 2005-03-17 21:35:29 UTC
Created attachment 112109 [details]
lsmod before modprobing matroxfb-base

Comment 5 Tom Wood 2005-03-17 21:36:11 UTC
Created attachment 112110 [details]
lsmod after modprobing matroxfb-base

Comment 6 Tom Wood 2005-03-17 21:40:11 UTC
The lockups and bad behaving video are caused by a segfaulting matroxfb-base
module.  This doesn't segfault in the UP kernel, just the SMP kernel.  I
disabled the "other" category in /etc/rc.sysinit around line 210 or so and
manually modprobed the modules it specified.  The others (parport_pc and
uhci-hcd) were fine.

Please see the last two attachments for details from lsmod.

Comment 7 Tom Wood 2005-03-17 22:51:28 UTC
Created attachment 112113 [details]
stack trace of the failed "modprobe matroxfb_base"

Comment 8 Tom Wood 2005-03-21 15:01:28 UTC
Still exists in 1191 kernel.

Comment 9 Tom Wood 2005-03-25 19:41:10 UTC
Still exists in 1202 kernel.

Comment 10 Tom Wood 2005-03-29 16:11:15 UTC
Still no matrox love in 1208 SMP kernel.

Comment 11 Tom Wood 2005-03-31 21:00:49 UTC
The 1219 kernel is worse.  Now the UP kernel also hangs in the same spot.

Comment 12 Tom Wood 2005-04-04 18:22:11 UTC
Works fine now in 1225 kernel, UP and SMP both.  Get a rather disconcerting font
change and a momentary blinking out of the video, but that's to be expected.

Comment 13 A.J. Perry 2005-04-24 23:58:30 UTC
I have a similar problem on my machine.  It boots up, then starts loading the
GUI, and gets as far as 'setting hostname'.  Then the display goes black.  There
is still a signal to the screen, because the LED stays green, but there's no
display, and no mouse curser.

I have to reboot several times to get any further than this.  I know it's not
booting any further, because I can't SSH into it.  It does however show up in my
DHCP table.

I'm running Fedora Core 2, 2.6.11-1.14_FC3, on a Pentium 3, 500MHz, AOpen AX6BC
motherboard with the latest bios, 256MB ram, PA700 pro display adapter.  If I
can get it to boot any further, I might be able to get more system info.  

Comment 14 Dave Jones 2005-06-27 23:25:33 UTC
Mass update of -test bugs to update version to fc4.
(Please retest on final release, and report results if you have not already done
so).

Thanks.