[Bug 633596] Re: blank screen on bootup with HP Touchsmart tm2t laptop

[alistair]

I can confirm this regression from Lucid.  Only the VESA driver now
works.  The VESA driver is reliable, but obviously limited in fetures.

I find that the boot process hangs completely with a kernel crash when
the radeon driver is loaded in the default configuration.  My work-
around is to boot using the nomodeset option into a command line and
then remove radeon.ko from the modules tree.

This allows the system to boot, but nothing I have tried will activate
the Intel driver/card combination, and vgaswitcheroo does not seem to
recognise the two cards (there is no entry under /sys/kernel/debug ).
Starting X delivers a blank screen.  I can make the text screen re-
appear only by pushing the power-off button to force a reboot.

This machine has few options in the BIOS settings, so it is not possible
to force one or other graphics adapter to be active on boot-up.

I thought that this machine was the intended target for Ubuntu
multitouch support, so it is strange that it does not work at all!

A

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blank screen on bootup with HP Touchsmart tm2t laptop
https://bugs.launchpad.net/bugs/633596
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