kde 4.4.2: black screen after plymouth

[paolinuz]

Binary package hint: kdebase-workspace

Often, after plymouth is loaded, X don't start with nvidia driver.
With kdm I get black screen (my monitors flashes various time) and I can only reboot my system pressing the reset button on my laptop.
Only after "n" reboot i can see kdm login screen.

I have installed gnome-desktop wiht gdm as default login manager.

Also with gdm i have the same problem but i can see diagnostic window that show me the following message:

Failed to allocate primary buffer. out of memory
EEE NVIDIA(0): *** Aborting ***

Than i can acces to X with vesa driver and than i can reboot safety my system.
After reboot X start with nvidia driver and I can login on my system...

My system laptop:
Acer TravelMate 5620
kubuntu lucid 10.04 32 bit
kde 4.4.2
nvidia driver 256.35
01:00.0 VGA compatible controller: nVidia Corporation G72M [Quadro NVS 110M/GeForce Go 7300] (rev a1)

[Jonathan Thomas (echidnaman)]

Driver issue.

[Daniel Hahler (blueyed)]

Just for info: instead of hard-resetting your machine, you can "soft-reboot" it using the "Alt-SysReq-REISUB" method, see http://mark.koli.ch/2009/02/linux-magic-sysrq-key-r-e-i-s-u-b-reboot-even-if-system-utterly-broken.html

[Daniel Hahler (blueyed)]

This just happened to me, too - using xorg-edgers PPA.

[Daniel Hahler (blueyed)]

My workaround (also before using xorg-edgers (which is required currently for nvidia)) is to boot the recovery kernel, wait until disk activity is silent, then manually do "init 2" and "start kdm".

[Daniel Hahler (blueyed)]

See also bug 607490, which indicates this might be a kernel issue.