[Bug 560464] Re: "acer-wmi: Unable to detect available WMID devices" on boot

[kukide]

Hi, my problem looks like this bug. I have Acer Aspire One D250-0Bk. I want to install UNE 10.04 from liveUSB. Ubuntu can not boot from USB. I found somewhere advice to press Esc after screen goes to black. And its working. I install UNE without any error. After restart booting stops in black screen.
Boot is doing this: power > bios > screen with terminal cursor, HDD blinking > screen going to black and HDD stop blinking. Thats all.
For me what is working is pressing Esc at right time in startup.

When I boot with comand line its stop booting on line: "acer-wmi: Unable to detect available WMID devices".
I try Markhor solution, but when I want to close terminal after update grub, terminal writes Its still running some process... I closed with this message because i wait long time and nothing is happening.
After restart computer does this: power > bios > screen with terminal cursor > black screen > splash screen with ubuntu logo > HDD stop blinking and dot under logo doesnt change color. After switch-off with power buton and start again its startup without any problem.
But now still after first start going too black. Pressing Esc button after splash screen is working. If i dont press Esc then goes to black and after power button restart it starts again normally. Boot only works right after hard restart, and only every other time.

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"acer-wmi: Unable to detect available WMID devices" on boot
https://bugs.launchpad.net/bugs/560464
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