PC previously been running 10.10 without any issues.
1) Tried Ubuntu 12.04-i386 desktop from live CD and everything worked ok. Could access network, internet etc.
2) Installed 12.04 from live CD. Installation no apparent problems. On reboot grub screen appeared, selected Ubuntu boot continued but then froze with "Orange" background screen, with word "Ubuntu" on and five "orange dots".
Then screen froze. Never reached login screen.
3) Hard reset, used "Ubuntu recovery" option. Failsafe X option from this also failed to boot.
4) Hard reset, used "Ubuntu recovery" option and then "root Drop to root shell prompt".
Looked in /var/log/Xorg.0.log found following lines:
[ 18.914] (==) Matched nvidia as autoconfigured driver 0
[ 18.914] (==) Matched nouveau as autoconfigured driver 1
[ 18.914] (==) Matched nv as autoconfigured driver 2
[ 18.914] (==) Matched vesa as autoconfigured driver 3
[ 18.914] (==) Matched fbdev as autoconfigured driver 4
[ 18.914] (==) Assigned the driver to the xf86ConfigLayout
[ 18.914] (II) LoadModule: "nvidia"
[ 18.914] (II) Loading /usr/lib/i386-linux-gnu/xorg/extra-modules/nvidia_drv.so
[ 18.914] (II) Module nvidia: vendor="NVIDIA Corporation"
[ 18.914] compiled for 4.0.2, module version = 1.0.0
[ 18.914] Module class: X.Org Video Driver
[
.. Above "[" line was last line in file. So nvidia module failed to load?
Ran from terminal:
$ lspci | grep VGA
02:00.0 VGA compatible controller: NVIDIA Corporation G86 [GeForce 8400 GS] (rev a1)
5) Rebooted computer and re-started from Live CD.
$ lspci | grep VGA
02:00.0 VGA compatible controller: NVIDIA Corporation G86 [GeForce 8400 GS] (rev a1)
$ lsmod | grep video
videobuf_dvb 13867 1 saa7134_dvb
dvb_core 94814 1 videobuf_dvb
videobuf_dma_sg 18786 3 saa7134_dvb,saa7134_alsa,saa7134
videobuf_core 25409 3 videobuf_dvb,saa7134,videobuf_dma_sg
videodev 86588 3 tuner,saa7134,v4l2_common
video 19068 1 nouveau
So live CD using nouveau and not nvidia driver.
6) Reboot from harddrive installed Ubuntu, used "Ubuntu recovery" option
To get file system mounted rw had to select entry:
network Enable networking
and then
"root Drop to root shell prompt"
To get to the command line.
I don't understand harddrive install trying to use nvidia and not nouveau driver, as I do not recall asking for the binary nvidia driver to be installed during the harddrive install.
To find package nvidia driver was in ran:
$ dpkg -l | grep -i nvidia
ii nvidia-common 1:0.2.44 Find obsolete NVIDIA drivers
ii nvidia-current 295.40-0ubuntu1 NVIDIA binary Xorg driver, kernel module and VDPAU library
ii nvidia-settings 295.33-0ubuntu1 Tool of configuring the NVIDIA graphics driver
"removed" nvidia module:
$ dpkg -r nvidia-current
Rechecking nvidia modules now looked like:
$ dpkg -l | grep -i nvidia
ii nvidia-common 1:0.2.44 Find obsolete NVIDIA drivers
rc nvidia-current 295.40-0ubuntu1 NVIDIA binary Xorg driver, kernel module and VDPAU library
ii nvidia-settings
7) Re-booted machine and harddrive installation of Ubuntu now worked.
Looked in /var/log/Xorg.0.log found following lines:
[ 14.316] (==) Matched nvidia as autoconfigured driver 0
[ 14.316] (==) Matched nouveau as autoconfigured driver 1
[ 14.316] (==) Matched nv as autoconfigured driver 2
[ 14.316] (==) Matched vesa as autoconfigured driver 3
[ 14.316] (==) Matched fbdev as autoconfigured driver 4
[ 14.316] (==) Assigned the driver to the xf86ConfigLayout
[ 14.316] (II) LoadModule: "nvidia"
[ 14.316] (WW) Warning, couldn't open module nvidia
[ 14.316] (II) UnloadModule: "nvidia"
[ 14.316] (II) Unloading nvidia
[ 14.316] (EE) Failed to load module "nvidia" (module does not exist, 0)
[ 14.316] (II) LoadModule: "nouveau"
[ 14.317] (II) Loading /usr/lib/xorg/modules/drivers/nouveau_drv.so
... plus lots of output after this about nouveau driver ...
$ lsmod | grep video
videobuf_dvb 13867 1 saa7134_dvb
dvb_core 94814 1 videobuf_dvb
videobuf_dma_sg 18786 3 saa7134_dvb,saa7134_alsa,saa7134
videobuf_core 25409 3 videobuf_dvb,saa7134,videobuf_dma_sg
videodev 86588 3 tuner,saa7134,v4l2_common
video 19068 1 nouveau
So nouveau driver being used in harddrive install and all working ok.
8) Went to report as bug
i) nvidia binary driver not working with "GeForce 8400 GS"
ii) nvidia binary driver installed even though I did not ask for it
Using previous instructions: Whilst running Ubuntu: F2 Enter text: ubuntu-bug nvidia-current
To be told: "Since development is completed for the 'precise' version of Ubuntu, you should probably uses its technical support channels instead of this tool"
So no bugs left in 12.04 then...
So I am reporting the information here in case it is of interest to anyone.
Once this hiccup was over, the machine is running smoothly and everything working very well.
So a good release, thank-you.
