Kernel panic when kldunload acpi_video
smithi at nimnet.asn.au
Tue Jan 15 19:33:48 PST 2008
On Wed, 16 Jan 2008, Norberto Meijome wrote:
> Hi guys,
> I am not sure if this is acpi related or due to other issues.
> running latest FreeBSD (built yesterday from fresh sources :
> FreeBSD ayiin.xxx.com.au 7.0-PRERELEASE FreeBSD 7.0-PRERELEASE #14:
> Wed Jan 16 01:38:57 EST 2008
> root at ayiin.xxx.com.au:/usr/obj/usr/src/sys/AYIIN i386
> Hardware is Thinkpad z60m , 1.5 GB of RAM. dmesg (non verbose) is @
> end of this mail
> I had :
> Id Refs Address Size Name
> 1 30 0xc0400000 63b77c kernel
> 2 1 0xc0a3c000 84a0 linprocfs.ko
> 3 3 0xc0a45000 28878 linux.ko
> 4 1 0xc0a6e000 10328 if_iwi.ko
> 5 1 0xc0a7f000 155c4 snd_hda.ko
> 6 2 0xc0a95000 4a36c sound.ko
> 7 2 0xc0ae0000 6a184 acpi.ko
> 8 1 0xc0b4b000 4ff4 acpi_ibm.ko
> 9 1 0xc0b50000 2f338 iwi_ibss.ko
> 10 1 0xc0b80000 2f4b0 iwi_monitor.ko
> 11 1 0xc0bb0000 22c98 radeon.ko
> 12 2 0xc0bd3000 10e98 drm.ko
> 13 1 0xc4b22000 d000 ipfw.ko
> 14 1 0xccd23000 2000 rtc.ko
> PLUS acpi_video.ko loaded in /boot/loader.conf.local.
> doing a kldunload acpi_video would panic the kernel. Also happened in
> single user.
> I have crash dumps, but unfortunately, i wiped the kernel.debug after
> starting a full clean rebuild of kernel + world for today's changes.
> I don't know whether this problem happened before 7 - i only started
> loading acpi_video for a few weeks when I realised I couldn't change
> the brightness on the screen anymore when under X (works ok in a
not to detract from the seriousness of the problem, two dumb questions:
1) why would you need to unload it? ie did loading it fix the problem?
2) does this mean the acpi_ibm brightness controls aren't working in X?
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