3
votes
1answer
183 views

Mouse and touchpad freeze without power supply

I have a fresh installed Ubuntu 12.04 LTS on my HP ProBook. My external mouse and my touchpad freeze in battery mode. I can reinitialize them with Ctrl + Alt + 1 and back to 7. As long as I move the ...
4
votes
1answer
2k views

What is an ACPI GPE storm?

Just experienced a system freeze (no touchpad, no keyboard, screen looked normal), Alt/SysRq/REISUB didn't work, had to press the start button. In var/log/kern.log I find "ACPI: EC: GPE storm ...
2
votes
1answer
3k views

Bootup hangs on “Checking battery state..” after after 12.04 upgrade [closed]

I have scanned thru all the posts on this issue. But I have not been able to get a resolution. Has anyone applied a clean fix to this issue? I had 11.10 on Lenovo Thinkpad T60 and upgraded to 12.04 ...
1
vote
1answer
735 views

Freeze on boot if on battery [closed]

We are looking at a freshly installed Ubuntu 11.04 (64bit) on a Lenovo Thinkpad w520 with an Nvidia GPU. The machine freezes eventually during startup on battery. Startup on AC is fine. The only ...