Hybrid graphics -- cannot access second GPU [SOLVED]

I have latest Arch on my desktop, with Intel 4770k including an integrated graphics. Recently I installed a Geforce GTX 750 Ti into the desktop and want to use this hybrid GPU system. Problem is after I installed nouveau + bumblebee + bbswitch, the system cannot access the second (nVidia) GPU:
optirun -vv glxgears
and the output is:
[ 41.936801] [DEBUG]Reading file: /etc/bumblebee/bumblebee.conf
[ 41.937150] [DEBUG]optirun version 3.2.1 starting...
[ 41.937160] [DEBUG]Active configuration:
[ 41.937162] [DEBUG] bumblebeed config file: /etc/bumblebee/bumblebee.conf
[ 41.937165] [DEBUG] X display: :8
[ 41.937167] [DEBUG] LD_LIBRARY_PATH:
[ 41.937169] [DEBUG] Socket path: /var/run/bumblebee.socket
[ 41.937171] [DEBUG] Accel/display bridge: auto
[ 41.937173] [DEBUG] VGL Compression: proxy
[ 41.937175] [DEBUG] VGLrun extra options:
[ 41.937177] [DEBUG] Primus LD Path: /usr/lib/primus:/usr/lib32/primus
[ 41.937216] [DEBUG]Using auto-detected bridge virtualgl
[ 41.950748] [INFO]Response: No - error: [XORG] (EE) systemd-logind: failed to get session: PID 924 does not belong to any known session
[ 41.950767] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) systemd-logind: failed to get session: PID 924 does not belong to any known session
[ 41.950769] [DEBUG]Socket closed.
[ 41.950777] [ERROR]Aborting because fallback start is disabled.
[ 41.950789] [DEBUG]Killing all remaining processes.
I looked through several posts, but still do not quite understand how to solve this problem. Besides, there is no
/proc/acpi/bbswitch
file in my directory. I am sure I have installed bbswitch already.
Thanks very much.
Last edited by nullwax (2014-08-22 15:34:22)

ArchAddict wrote:I am using a GT 770M and it works just fine for me. Instead of using nouveau have you tried only xf86-video-intel, nvidia, and bumblebee? Using optirun with these packages and it works for me like a charm.
Thanks, ArchAddict. I remove nouveau things and install nvidia. Seems it works now. Quite strange, since previously there is a conflict when install official package nvidia.
However, there is another thing right now:
optirun -vv glxgears
and the last part of the output becomes:
[ 269.013157] [INFO]Response: Yes. X is active.
[ 269.013176] [INFO]Running application using virtualgl.
[ 269.013265] [DEBUG]Process vglrun started, PID 1292.
/usr/bin/vglrun: line 241: exec: glxgears: not found
[ 269.018514] [DEBUG]SIGCHILD received, but wait failed with No child processes
[ 269.018532] [DEBUG]Socket closed.
I am not quite familiar with graphics card things, and what does it mean by glxgears: not found? Thanks a lot.

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Cannot access secondary GPU

I have installed bumblebee and bbswitch but when I run optirun glxgears , see this error :
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I don't have /etc/X11/xorg.conf and i don't know what configuration from /usr/share/X11/xorg.conf.d/ works for me now .
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[saman@saman ~]$ sudo tee /proc/acpi/bbswitch <<<OFF
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[saman@saman ~]$ cat /proc/acpi/bbswitch
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In /etc/mkinitcpio.conf I have :
MODULES="i915 nvidia bbswitch"

I have done instructions of this post : https://bbs.archlinux.org/viewtopic.php … 0#p1326090
[saman@saman ~]$ cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-linux root=UUID=a480d93f-e224-4077-83dd-7d794f593e0e rw quiet splash acpi_backlight=vendor rcutree.rcu_idle_gp_delay=1
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ccm 17534 1
coretemp 12820 0
fuse 87590 7
intel_rapl 17605 0
iosf_mbi 12682 1 intel_rapl
x86_pkg_temp_thermal 12951 0
uvcvideo 84822 0
videobuf2_vmalloc 13286 1 uvcvideo
videobuf2_memops 12519 1 videobuf2_vmalloc
intel_powerclamp 17122 0
videobuf2_core 39635 1 uvcvideo
v4l2_common 12814 1 videobuf2_core
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arc4 12536 2
ath9k 129093 0
gf128mul 12970 1 lrw
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acer_wmi 17603 0
snd_hda_codec_realtek 67322 1
snd_hda_codec_generic 63161 1 snd_hda_codec_realtek
glue_helper 12649 1 aesni_intel
ath9k_common 26722 1 ath9k
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serio_raw 12849 0
pcspkr 12595 0
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mei_me 17987 0
evdev 21544 33
i2c_i801 16965 0
mac_hid 12633 0
soundcore 13031 2 snd,snd_hda_codec
mei 75468 1 mei_me
battery 17452 0
shpchp 35210 0
ac 12715 0
lpc_ich 20768 0
processor 27777 0
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ext4 514390 1
crc16 12343 1 ext4
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jbd2 86379 1 ext4
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usbhid 48596 0
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sdhci 39102 1 sdhci_pci
ehci_pci 12512 0
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xhci_pci 12675 0
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atkbd 22254 0
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libata 181461 2 ahci,libahci
led_class 12855 3 ath9k,sdhci,acer_wmi
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nvidia_uvm 66649 0
nvidia 8344432 2 nvidia_uvm
i915 1002518 8
button 12953 1 i915
intel_gtt 17848 1 i915
i2c_algo_bit 12744 1 i915
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Cannot access secondary GPU - error : [XORG] (EE) systems-logind

When I try to run
optirun xterm
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Cannot access secondary GPU - error : [XORG] (EE) systems-logind: failed to get session: PID 361 does not belong to any known session.
Aborting because fallback start is disabled
I tried it as the troubleshoot section from bumblebee wiki. How can I fix it. I installed kernel 3.18.6 and nvidia driver 346.47
Last edited by aaa234 (2015-03-04 07:53:46)

When I try to run
optirun xterm
it returns
Cannot access secondary GPU - error : [XORG] (EE) systems-logind: failed to get session: PID 361 does not belong to any known session.
Aborting because fallback start is disabled
I tried it as the troubleshoot section from bumblebee wiki. How can I fix it. I installed kernel 3.18.6 and nvidia driver 346.47
Last edited by aaa234 (2015-03-04 07:53:46)

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davvil wrote:
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Hybrid graphics -- cannot access second GPU [SOLVED]

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