Red Hat Bugzilla – Bug 479306
Kernel kernel-126.96.36.199-159.fc10.x86_64 locks system on Thinkpad T61
Last modified: 2009-12-18 02:32:51 EST
Description of problem:
When updating my FC10 system (Thinkpad T61, Core 2 Duo T5670, Intel ICH8 + integrated graphics, iwl4965AGN) to latest kernel, the system becomes slower and slower and more and more unresponsive (e.g. to mouse events). It gets really unusable after about 1h and finally locks down.
Inspired by googling I added the kernel parameter "clocksource=jiffies" which immediately locked the system when X was started.
Version-Release number of selected component (if applicable):
Easily - it always happens.
Steps to Reproduce:
1. Boot the new kernel
2. Use the system normally for 30-60 minutes
By watching /proc/interrupts I got the impression that there is a huge number of interrupts occuring.
Currently (with old kernel) and after using the system for ca. 30 minutes the line for IRQ16 says:
16: 2538 257460 IO-APIC-fasteoi ahci, uhci_hcd:usb5, yenta, i915@pci:0000:00:02.0
While with the new kernel, the number in the third column goes into the millions quite quickly.
Additionally I observe cracky (interrupted) sound, but this also happens with the older kernel (not as bad - but anyway).
Could you post dmesg output as uncompressed attachment to this bug ?
Does pci=noacpi help ?
Created attachment 331468 [details]
(In reply to comment #1)
> Could you post dmesg output as uncompressed attachment to this bug ?
> Does pci=noacpi help ?
I've added the dmesg output and I'll try pci=noacpi as soon as possible.
You could also try adding just pci=msi instead of pci=noacpi.
(In reply to comment #4)
> You could also try adding just pci=msi instead of pci=noacpi.
I just checked pci=noacpi: system does not even boot up. Something goes wrong in the SATA driver initialization and then root device cannot be mounted.
I also tried pci=msi, which basically worked but somehow made my WLAN (iwl4965agn) fail to associate with my AP (using WPA2). I had the same problem already with some older kernel (some month ago) but it vanished with some kernel update.
But I will give pci=msi a real try later...
Now I also checked the pci=msi - the problem persists and the system slows down after something like 20 minutes...
just checked the latest kernel (188.8.131.52-170.2.24.fc10.x86_64): it still shows same behaviour..
as an update: problem persists with kernel-184.108.40.206-170.2.56.fc10.x86_64 .
When system starts getting unresponsive, I usually try to shutdown in a hurry.. Two observation when system goes down:
a) usually, when cupsd is to be stopped (may be coincidence) the system prints a message "Disabling IRQ #16" (which does not appear when running old kernel-220.127.116.11-117.fc10.x86_64)
b) when shutdown reaches the point where iptables is to flush its tables, the system is stuck (key presses are recognized, but nothing else happens)
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