I have the same problem with my Futjitsu Lifebook AH-531/GFO on Kubuntu
14.04.
lspci | grep 'VGA'
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: NVIDIA Corporation GF108M [GeForce GT 525M]
(rev a1)
dmesg | grep -E 'bbswitch|nvidia'
[ 3.047772] nvidia: module license 'NVIDIA' taints kernel.
[ 3.126575] nvidia: module verification failed: signature and/or required
key missing - tainting kernel
[ 3.132672] nvidia 0000:01:00.0: enabling device (0000 -> 0003)
[ 3.138900] [drm] Initialized nvidia-drm 0.0.0 20130102 for 0000:01:00.0 on
minor 1
[ 4.045734] bbswitch: version 0.7
[ 4.045749] bbswitch: Found integrated VGA device 0000:00:02.0:
\_SB_.PCI0.GFX0
[ 4.045756] bbswitch: Found discrete VGA device 0000:01:00.0:
\_SB_.PCI0.PEG0.PEGP
[ 4.045815] bbswitch: failed to evaluate \_SB_.PCI0.GFX0._DSM
{0xA0,0xA0,0x95,0x9D,0x60,0x00,0x48,0x4D,0xB3,0x4D,0x7E,0x5F,0xEA,0x12,0x9F,0xD4}
0x102 0x0 {0x00,0x00,0x00,0x00}: AE_NOT_FOUND
[ 4.045817] bbswitch: No suitable _DSM call found.
[ 14.057221] init: Failed to spawn nvidia-persistenced main process: unable
to execute: No such file or directory
** Attachment added: "dmidecode.log"
https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1310023/+attachment/4121328/+files/dmidecode.log
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https://bugs.launchpad.net/bugs/1310023
Title:
14.04: Nvidia Prime is unable to switch to the Nvidia card
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