[SOLVED] Hybridgraphics: acpi_call after Kernelupgrade not working

Question

Hi,
after upgrading from Kernel 3.14.6 to 3.15.1, deactivating the my Nvidia Optimus GT730M by using acpi_call seems not to work anymore. Calling the parameters which worked until now seems to succeed:
bla$ sudo sh -c './gpuOff.sh && cat /proc/acpi/call'
0x0called
But neither I was able to observe any changes of the battery state nor the output of lspci has changed. As far as I can gather, there should be something like "rev ff" indicating a deactivated card?!
bla$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
02:00.0 VGA compatible controller: NVIDIA Corporation GK208M [GeForce GT 730M] (rev a1)
Acpi_call is up2date and compiled with current Headers.
Maybe I'm missing something?
Last edited by bl0b (2014-07-11 12:06:33)

Answer 1

Sorry ^^
The script simply contains the parameters for deactivating the NVIDIA card of my t440p.
#!/bin/bash
echo "\_SB.PCI0.PEG.VID._DSM {0xF8,0xD8,0x86,0xA4,0xDA,0x0B,0x1B,0x47,0xA7,0x2B,0x60,0x42,0xA6,0xB5,0xBE,0xE0} 0x100 0x1A {0x1,0x0,0x0,0x3}" >/proc/acpi/call
echo "\_SB.PCI0.PEG.VID._PS3" >/proc/acpi/call
exit 0
I have checked both lines and both commands succeed, at least according to /proc/acpi/call.
PS:
Using bumblebee/bbswitch is not working for me since it causes data corruption
Last edited by bl0b (2014-06-19 15:35:35)