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This is 12.04 LTS on an AMD A8-3870 APU with Radeon(tm) HD Graphics.

Had 12.04 installed for a couple of weeks. Previously updated ~1 week ago.

Installed konqueror + available updates on 25/May apparently successfully.

On reboot, machine hangs in KDE splash screen, before login dialogue. No response to num lock, or other keys.

Can run recovery mode command prompt & networking.

Is there a way to find what updates were applied, and roll them back ?

Is there a way to stop the gui splash screen, and display text startup logging instead ?

Bat
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    To disable splash screen do this at terminal: sudo nano /etc/default/grub then change the line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to GRUB_CMDLINE_LINUX_DEFAULT=""; save; the run sudo update-grub – desgua May 28 '12 at 19:00
  • Then post here what errors do you get. Sometimes if you press "Esc" at splash screen you will be able to see the text info. – desgua May 28 '12 at 19:02
  • Thankyou for that. I suspect it is freezing during X initialisation. Boot seems to proceed OK. With GRUB_CMDLINE_LINUX_DEFAULT="" I briefly see a text login prompt, then it hangs. grub.cfg seems to have changed quite a bit. I used to have "nomodeset" at the end of the usual boot line, to allow a VGA monitor, but that has gone, and seems not to be necessary. – Bat May 29 '12 at 08:43
  • This question should instead be filed as a bug report, and as such is off-topic, thanks! Instructions on filing a bug report are here. – Jorge Castro Jun 12 '12 at 19:33

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