Thread: random boot problems

hello everyone, i'm having problems booting ubuntu 11.10.

when power on laptop, goes through grub , boot splash , freezes @ 'checking battery state'. can switch virtual term , login, @ point says "failed start x server". x.org.0.log says "no screens found - aborting". here's last few relevant lines xorg.0.log:

code:

[   127.379] (ii) vesa: driver vesa chipsets: vesa [   127.379] (ii) fbdev: driver framebuffer: fbdev [   127.379] (++) using vt number 7  [   127.379] (ww) xf86openconsole: setpgid failed: operation not permitted [   127.379] (ii) loading /usr/lib/xorg/modules/drivers/radeon_drv.so [   127.379] (ii) [kms] kernel modesetting enabled. [   127.379] (ww) falling old probe method vesa [   127.379] (ww) falling old probe method fbdev [   127.379] (ii) loading sub module "fbdevhw" [   127.379] (ii) loadmodule: "fbdevhw" [   127.379] (ii) loading /usr/lib/xorg/modules/libfbdevhw.so [   127.379] (ii) module fbdevhw: vendor="x.org foundation" [   127.379]    compiled 1.10.4, module version = 0.0.2 [   127.379]    abi class: x.org video driver, version 10.0 [   127.379] (ii) radeon(0): creating default display subsection in screen section         "default screen section" depth/fbbpp 24/32 [   127.379] (==) radeon(0): depth 24, (--) framebuffer bpp 32 [   127.379] (ii) radeon(0): pixel depth = 24 bits stored in 4 bytes (32 bpp pixmaps) [   127.379] (==) radeon(0): default visual truecolor [   127.379] (==) radeon(0): rgb weight 888 [   127.379] (ii) radeon(0): using 8 bits per rgb (8 bit dac) [   127.379] (--) radeon(0): chipset: "amd radeon hd 6900m series" (chipid = 0x6720) [   127.379] (ii) radeon(0): pcie card detected [   127.379] drmopendevice: node name /dev/dri/card0 [   127.379] drmopendevice: open result 12, (ok) [   127.379] drmopenbybusid: searching busid pci:0000:01:00.0 [   127.379] drmopendevice: node name /dev/dri/card0 [   127.379] drmopendevice: open result 12, (ok) [   127.379] drmopenbybusid: drmopenminor returns 12 [   127.379] drmopenbybusid: interface 1.4 failed, trying 1.1 [   127.379] drmopenbybusid: drmgetbusid reports pci:0000:01:00.0 [   127.379] (ee) radeon(0): [drm] failed set drm interface version. [   127.379] (ee) radeon(0): kernel modesetting setup failed [   127.379] (ii) unloadmodule: "radeon" [   127.379] (ii) unloading radeon [   127.379] (ee) screen(s) found, none have usable configuration. [   127.379]  fatal server error: [   127.379] no screens found [   127.379]  please consult the x.org foundation support           @ http://wiki.x.org  help.  [   127.379] please check log file @ "/var/log/xorg.1.log" additional information. [   127.379]  [   127.383]  ddxsiggiveup: closing log

i not video guru. being said, see line modesetting failing.

can place kernel option in grub 2 disable modesetting every time. might try once see if boots. if does, , video works satisfactorily, can incorporate 'nomodeset' option permanently in /etc/default/grub on grub_cmdline_linux_default= line.

if doesn't boot, @ least know problem may video drivers.

add nomodeset option temporarily see if affects boot, @ grub menu press 'e'.

cursor 'linux' line, go end, remove 'quiet splash' , add 'nomodeset'.

ctrl-x boot.

change not persistent. have repeat or add nomodeset option /etc/default/grub, save file, run "sudo update-grub".

users video problems able boot option install graphics drivers , no longer need 'nomodeset' option.

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