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Message #00646
Acer 4820TG can't suspend or hibernate after switching off GPU
I have an Acer TimelineX 4820TG with the intel I5 IGP and ATI 5650
GPU. Using the acpi_call checked out from git, I do the following:
sudo insmod acpi_call.ko
./test_off.sh
Trying \_SB.PCI0.P0P2.PEGP._OFF works!
after that I can't suspend. I have tried writing a script with
\_SB.PCI0.P0P2.PEGP._ON
followed by sudo rmmod acpi_call.ko
but that doesn't help.
The laptop hangs on hibernate.
It suspends fine, but hangs on the ubuntu screen when waking up.
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