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skualito

Member

Registered: 2008-11-19

Posts: 203

[SOLVED (kind of...)] v86d segfault after system update

I just upgraded the system

[2009-04-09 15:42] starting full system upgrade
[2009-04-09 15:45] upgraded gpgme (1.1.7-2 -> 1.1.8-1)
[2009-04-09 15:45] upgraded ipw2200-fw (3.0-2 -> 3.1-1)
[2009-04-09 15:45] upgraded kernel26-firmware (2.6.28-1 -> 2.6.29-1)
  ............................................ mkinitcpio stuff................
[2009-04-09 15:46] upgraded kernel26 (2.6.28.8-1 -> 2.6.29.1-3)
[2009-04-09 15:46] upgraded lirc-utils (0.8.4-1 -> 0.8.5pre2-1)
[2009-04-09 15:46] upgraded pacman-mirrorlist (20090108-1 -> 20090405-1)

and now get this error on startup, which slow down considerably the boot process. The screen goes black, then blinks with some messages and finally it seems the framebuffer succeed in displaying despite the segfault. I reinstalled 915Resolution which I use to get a 1280x800 res on a intel 915GM card, and also reinstalled v86d, and rebuilt the init image, but still not working properly

Apr  9 15:56:47 shanti kernel: v86d[542]: segfault at b7ffea6a ip 0804874e sp bff44510 error 7 in v86d (deleted)[8048000+15000]
Apr  9 15:56:47 shanti kernel: uvesafb: mode switch failed (eax=0x4f02, err=1). Trying again with default timings.
Apr  9 15:56:47 shanti kernel: v86d[5717]: segfault at b7df7a6a ip 080490b5 sp bfbbe330 error 7 in v86d[8048000+18000]
Apr  9 15:56:47 shanti kernel: uvesafb: mode switch failed (eax=0x4f02, err=1). Trying again with default timings.

Any ideas/help ?

Edit: I also rebuilt v86d from abs but still no success...

Last edited by skualito (2009-04-13 16:05:05)

Cheesebaron

Member

From: Denmark

Registered: 2008-10-31

Posts: 65

Website

Re: [SOLVED (kind of...)] v86d segfault after system update

I've seen this a couple of places before. When the problem occurs it takes 10-15 seconds for uvesafb or whatever fb you use to switch mode.

Might be related to klibc or the new KVM in the kernel. Try disabling it.

---

IBM Thinkpad X60 Tablet | Zen-sources | My AUR Builds

skualito

Member

Registered: 2008-11-19

Posts: 203

Re: [SOLVED (kind of...)] v86d segfault after system update

From what I read I understood that kvm is kernel-modules ('modprobe -l |grep' kvm gives kvm.ko kvm-amd.ko and kvm-intel.ko) and they are not loaded. How would i go disabling KVM in the kernel ?

skualito

Member

Registered: 2008-11-19

Posts: 203

Re: [SOLVED (kind of...)] v86d segfault after system update

I finally found a workaround to be able to use again the framebuffer with 1280x800.
Here's what I did.

1/ Removed v86d and 915resolution-static
2/ Removed grub
3/ Installed grub2-915resolution from aur
4/ Configured grub.cfg with help of this http://tuxce.blogspot.com/2009/01/grub- … intel.html
5/ Restart
6/ Installed lrmi from aur and run vbetest as root, pick the resolution number I want and add 512 to it.
7/ Add the result of above as a vga="number" to the end of the kernel line in grub.cfg
8/ Reboot and enjoy the 1280x800 resolution in framebuffer console