Hello! On my laptop does not work automatically switching between the video cards. Permanently works only Inel D4000 at any load. Should the under load switched on Nvidia GT670M? Nvidia card is activated only via optirun prefix...

virus@gbook:~$ dmesg | grep -C 10 bbswitch:
[   24.618453] cfg80211: Updating information on frequency 2467 MHz for a 20 MHz width channel with regulatory rule:
[   24.618455] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm)
[   24.618456] cfg80211: Updating information on frequency 2472 MHz for a 20 MHz width channel with regulatory rule:
[   24.618458] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm)
[   24.618460] cfg80211: Regulatory domain changed to country: RU
[   24.618461] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[   24.618462] cfg80211:   (2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm)
[   24.618464] cfg80211:   (5735000 KHz - 5835000 KHz @ 20000 KHz), (N/A, 3000 mBm)
[   24.965469] type=1400 audit(1339885407.518:16): apparmor="STATUS" operation="profile_load" name="/usr/bin/evince" pid=1265 comm="apparmor_parser"
[   24.966081] type=1400 audit(1339885407.518:17): apparmor="STATUS" operation="profile_load" name="/usr/bin/evince//launchpad_integration" pid=1265 comm="apparmor_parser"
[   26.823961] bbswitch: version 0.4.2
[   26.823967] bbswitch: Found integrated VGA device 0000:00:02.0: \_SB_.PCI0.GFX0
[   26.823973] bbswitch: Found discrete VGA device 0000:01:00.0: \_SB_.PCI0.PEG0.PEGP
[   26.824041] bbswitch: detected an Optimus _DSM function
[   26.824046] bbswitch: Succesfully loaded. Discrete card 0000:01:00.0 is on
[   26.825583] bbswitch: disabling discrete graphics
[   26.825704] bbswitch: Result of Optimus _DSM call: 11000059
[   26.836268] pci_raw_set_power_state: 18 callbacks suppressed
[   26.836271] pci 0000:01:00.0: Refused to change power state, currently in D0
[   26.836485] pci 0000:01:00.0: power state changed by ACPI to D3
[   26.847757] init: alsa-restore main process (1336) terminated with status 99
[   36.104515] wlan0: no IPv6 routers present
[   40.013187] EXT4-fs (sdc1): mounted filesystem with ordered data mode. Opts: (null)
[   45.195888] cfg80211: Found new beacon on frequency: 2472 MHz (Ch 13) on phy0
[  131.848174] bbswitch: enabling discrete graphics
[  132.255438] pci 0000:01:00.0: power state changed by ACPI to D0
[  132.255452] pci 0000:01:00.0: power state changed by ACPI to D0
[  132.255495] pci 0000:01:00.0: power state changed by ACPI to D0
[  132.255498] pci 0000:01:00.0: power state changed by ACPI to D0
[  132.255502] pci 0000:01:00.0: enabling device (0006 -> 0007)
[  132.356578] nvidia: module license 'NVIDIA' taints kernel.
[  132.356582] Disabling lock debugging due to kernel taint
[  132.362172] nvidia 0000:01:00.0: power state changed by ACPI to D0
[  132.362176] nvidia 0000:01:00.0: power state changed by ACPI to D0
[  132.362180] nvidia 0000:01:00.0: enabling device (0006 -> 0007)
[  132.362191] vgaarb: device changed decodes: PCI:0000:01:00.0,olddecodes=io+mem,decodes=none:owns=none
[  132.362258] NVRM: loading NVIDIA UNIX x86 Kernel Module  302.17  Tue Jun 12 18:37:51 PDT 2012
[  135.048590] bbswitch: disabling discrete graphics
[  135.048891] bbswitch: Result of Optimus _DSM call: 11000059
[  135.059399] pci 0000:01:00.0: Refused to change power state, currently in D0
[  135.059656] pci 0000:01:00.0: power state changed by ACPI to D3

virus@gbook:~$ uname -a
Linux gbook 3.4.2-custom-pae #1 SMP PREEMPT Fri Jun 15 00:54:12 MSK 2012 i686 i686 i386 GNU/Linux (.config same default on 3.2 kernel)

MSI GT70 0NC-034RU i7-3610QM 16Gb 750Gb+ SSD 128Gb nV GTX670M 3GB 17,3 DVD(BR-RW) BT Cam 7800mAh
Ubuntu 12.04 (x86)
xorg 1:7.6+12ubuntu1
xserver-xorg-video-intel 2:2.19.0+git20120613.0db789e1-0ubuntu0sarvatt~precise
xserver-xorg-video-nouveau 1:0.0.16+git20120613.36d3f8c2-0ubuntu0sarvatt~precise
nvidia-current 302.17-0ubuntu1~xedgers~precise1