Not working after kernel update 3.11.0-20-generic

[dariuszp]

Hi, bbswitch stopped working after kernel update. I tried to purge it and install it again. Didn't work. I used instructions from here: https://wiki.ubuntu.com/Bumblebee

uname -r

3.11.0-20-generic

dmesg | grep bbswitch

[   34.337169] bbswitch: module verification failed: signature and/or required key missing - tainting kernel
[   34.338288] bbswitch: version 0.8
[   34.338293] bbswitch: cannot find ACPI handle for VGA device 0000:00:02.0
[   34.338296] bbswitch: cannot find ACPI handle for VGA device 0000:01:00.0
[   34.338298] bbswitch: No discrete VGA device found
[  234.283069] bbswitch: version 0.8
[  234.283076] bbswitch: cannot find ACPI handle for VGA device 0000:00:02.0
[  234.283080] bbswitch: cannot find ACPI handle for VGA device 0000:01:00.0
[  234.283082] bbswitch: No discrete VGA device found

When I tried optirun I got:

[  925.450950] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) NVIDIA(0): Failed to initialize the NVIDIA GPU at PCI:1:0:0.  Please

[  925.450988] [ERROR]Aborting because fallback start is disabled.

so I tried to follow instructions in:

/etc/bumblebee/xorg.conf.nvidia

but this:

lspci | egrep 'VGA|3D'

give me:

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)

And in

/etc/bumblebee/xorg.conf.nvidia

I already have

BusID "PCI:01:00:0"

lspci:

00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5)
00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b5)
00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 (rev b5)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation HM67 Express Chipset Family LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
01:00.0 VGA compatible controller: NVIDIA Corporation GF108M [GeForce GT 525M] (rev a1)
02:00.0 Network controller: Intel Corporation Centrino Wireless-N 1030 [Rainbow Peak] (rev 34)
03:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04)
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05)

Suggestions? Everything worked fine before kernel update. Reinstalling didn't work for me.

[Lekensteyn]

Are you sure that you did not add noacpi or similar to the kernel command line (GRUB config in /etc/default/grub), either now or in the past? What does cat /proc/cmdline say?

[amonakov]

There were some regression w.r.t ACPI handle lookup in that timeframe; iirc 3.12.0 is when things finally stabilized.

[dariuszp]

Hi Lekensteyn, thank You for reply. You are right. I did start ubuntu installation with acpi=off noapic since without that, installation ui was just a black screen. But I removed it from /boot/grub/grub.cfg after installing nvidia drivers. And it worked fine.

/proc/cmdline

BOOT_IMAGE=/boot/vmlinuz-3.11.0-20-generic root=UUID=9233d2c6-4672-4833-98b2-45cf811679e4 ro acpi=off noapic quiet splash vt.handoff=7

How can I fix that?

[dariuszp]

Ok, I've edited /etc/default/grub and removed additional command lines

acpi=off noapic 

After that in terminal as root

update-grub

Then restart and things are back to normal. Thanks for suggestion!.