Запуск optirun glxspheres32 решил путём установки двух пакетов: lib32-opencl-nvidia-390xx и lib32-nvidia-390xx-utils. НО, теперь 32 битные игры просто падают. В консоле:
[VGL] ERROR: VirtualGL attempted to load the real
[VGL]   glXCreatePbuffer function and got the fake one instead.
[VGL]   Something is terribly wrong.  Aborting before chaos ensues.
Установка nvidia-390xx решила проблему. НО, я бы хотел запускать 32 битные приложения на 64 битной системе.
При попытке запуска 32 битной игры из стима выдаёт:
SDL video target is 'x11'
Failed to create GL context: Could not create GL context: BadValue (integer parameter out of range for operation)

Аналогично при запуске optirun glxspheres32:
Polygons in scene: 62464 (61 spheres * 1024 polys/spheres)
Visual ID of window: 0x20
X Error of failed request:  BadValue (integer parameter out of range for operation)
  Major opcode of failed request:  154 (GLX)
  Minor opcode of failed request:  24 (X_GLXCreateNewContext)
  Value in failed request:  0x0
  Serial number of failed request:  25
  Current serial number in output stream:  26

Что-то не так с иксами? как исправить?
Есть ноутбук с встроенной графикой Intel и дискретной NVidia GF 720M. Установлен пакет nvidia, bumblebee и bbswitch.
systemctl status bumblebeed:
● bumblebeed.service - Bumblebee C Daemon
   Loaded: loaded (/usr/lib/systemd/system/bumblebeed.service; enabled; vendor preset: disabled)
   Active: active (running) since Sun 2018-09-02 23:02:50 MSK; 35min ago
 Main PID: 420 (bumblebeed)
    Tasks: 1 (limit: 4915)
   Memory: 10.5M
   CGroup: /system.slice/bumblebeed.service
           └─420 /usr/bin/bumblebeed

сен 02 23:02:50 kolik systemd[1]: Started Bumblebee C Daemon.
сен 02 23:02:53 kolik bumblebeed[420]: [   22.689970] [INFO]/usr/bin/bumblebeed 3.2.1 started
сен 02 23:03:50 kolik bumblebeed[420]: modprobe: ERROR: could not insert 'nvidia': No such device
сен 02 23:03:50 kolik bumblebeed[420]: [   78.526160] [ERROR]Module nvidia could not be loaded (timeout?)
сен 02 23:03:50 kolik bumblebeed[420]: [   78.526191] [ERROR]Could not load GPU driver
сен 02 23:03:52 kolik bumblebeed[420]: modprobe: ERROR: could not insert 'nvidia': No such device
сен 02 23:03:52 kolik bumblebeed[420]: [   80.788150] [ERROR]Module nvidia could not be loaded (timeout?)
сен 02 23:03:52 kolik bumblebeed[420]: [   80.788179] [ERROR]Could not load GPU driver

Соотвественно modprobe пишет:
modprobe: INFO: custom logging function 0x55d580d0f920 registered
insmod /lib/modules/4.18.5-arch1-1-ARCH/extramodules/nvidia.ko.gz
modprobe: INFO: Failed to insert module '/lib/modules/4.18.5-arch1-1-ARCH/extramodules/nvidia.ko.gz': No such device
modprobe: ERROR: could not insert 'nvidia': No such device
modprobe: INFO: context 0x55d581d00460 released

И lspci -k:
01:00.0 3D controller: NVIDIA Corporation GF117M [GeForce 610M/710M/810M/820M / GT 620M/625M/630M/720M] (rev a1)
	Subsystem: Lenovo GeForce GT 720M
	Kernel modules: nouveau, nvidia_drm, nvidia

Собственно при попытке включения видеокарты арч считает, что её нет. Что делать?
Ну же, кто нибудь может помочь?
Новые данные: переустановил lib32-primus. Убрал optirun %command% (хотя связи вроде нет). Запускаю игру, вижу загрузочные экраны, но на загрузке меню намертво зависает и выдаёт окно с ошибкой "Out of memory or address space. Texture quality setting may be too high."
digger
Для запуска Black Mesa необходимо установить lib32-gperftools из AUR. Игра запустится, но будут проблемы с текстурами. Ждем когда починят…
Не помогло
ghost
ну хоть выхлоп терминала покажи… а то так гадать…
GameAction [AppID 362890, ActionID 2] : LaunchApp changed task to ProcessingInstallScript with ""
GameAction [AppID 362890, ActionID 2] : LaunchApp changed task to SynchronizingCloud with ""
GameAction [AppID 362890, ActionID 2] : LaunchApp changed task to SiteLicenseSeatCheckout with ""
GameAction [AppID 362890, ActionID 2] : LaunchApp changed task to CreatingProcess with ""
GameAction [AppID 362890, ActionID 2] : LaunchApp waiting for user response to CreatingProcess ""
GameAction [AppID 362890, ActionID 2] : LaunchApp continues with user response "CreatingProcess"
Opted-in Controller Mask: 70
Game update: AppID 362890 "", ProcID 20710, IP 0.0.0.0:0
>>> Adding process 20710 for game ID 362890
ERROR: ld.so: object '/home/kolik/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
GameAction [AppID 362890, ActionID 2] : LaunchApp changed task to WaitingGameWindow with ""
ERROR: ld.so: object '/home/kolik/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/home/kolik/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
GameAction [AppID 362890, ActionID 2] : LaunchApp changed task to Completed with ""
>>> Adding process 20711 for game ID 362890
ERROR: ld.so: object '/home/kolik/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
pid 20715 != 20712, skipping destruction (fork without exec?)
ERROR: ld.so: object '/home/kolik/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/home/kolik/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
>>> Adding process 20712 for game ID 362890
pid 20714 != 20712, skipping destruction (fork without exec?)
pid 20719 != 20712, skipping destruction (fork without exec?)
ERROR: ld.so: object '/home/kolik/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
>>> Adding process 20713 for game ID 362890
>>> Adding process 20717 for game ID 362890
pid 20718 != 20712, skipping destruction (fork without exec?)
ERROR: ld.so: object '/home/kolik/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/home/kolik/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
pid 20722 != 20712, skipping destruction (fork without exec?)
ERROR: ld.so: object '/home/kolik/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
>>> Adding process 20716 for game ID 362890
>>> Adding process 20720 for game ID 362890
ERROR: ld.so: object '/home/kolik/.local/share/Steam/ubuntu12_64/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS64): ignored.
>>> Adding process 20721 for game ID 362890
>>> Adding process 20723 for game ID 362890
>>> Adding process 20724 for game ID 362890
ATTENTION: default value of option vblank_mode overridden by environment.
SDL video target is 'x11'
SDL video target is 'x11'
Failed to create GL context: Could not create GL context: BadValue (integer parameter out of range for operation)Generating new string page texture 137: 128x256, total string texture memory is 1.85 MB
Имеется ноутбук Lenovo B590 с интеловской встроенной графикой и дискретной Nvidia 720M. Запускаю Steam, в стиме запускаю Black Mesa, вываливает ошибку: Failed to create GL context: Could not create GL context: BadValue (integer parameter out of range for operation). В параметрах запуска игры прописано: optirun %command%. Если запускать без параметры, то будет просто чёрный экран со звуками на фоне. Собственно куда копать-то? В интернетах говорят что этот баг уже был исправлен с обновлениям, но я регулярно обновляю систему.
vs220
KoliK
Хотя отключение xbindkeys помогает
cat ~/.xbindkeysrc
###########################
# xbindkeys configuration #
###########################
#
# Version: 0.1.3
#
# If you edit this, do not forget to uncomment any lines that you change.
# The pound(#) symbol may be used anywhere for comments.
#
# A list of keys is in /usr/include/X11/keysym.h and in
# /usr/include/X11/keysymdef.h
# The XK_ is not needed.
#
# List of modifier (on my keyboard):
#   Control, Shift, Mod1 (Alt), Mod2 (NumLock),
#   Mod3 (CapsLock), Mod4, Mod5 (Scroll).
#
# Another way to specifie a key is to use 'xev' and set the
# keycode with c:nnn or the modifier with m:nnn where nnn is
# the keycode or the state returned by xev
#
# This file is created by xbindkey_config
# The structure is :
# # Remark
# "command"
# m:xxx + c:xxx
# Shift+...
#keystate_numlock = enable
#keystate_scrolllock = enable
#keystate_capslock = enable
#u
"ulauncher"
    m:0x18 + c:68
    Alt + F2

#
# End of xbindkeys configuration

В довесок ко всему ещё и не срабатывает Alt + F2. ЧЯДНТ?

Кажется кто-то конфликтует. Вывод команды xbindkeys -n
add_key ok!!!  fun=1
add_key ok!!!  fun=1
add_key ok!!!  fun=1
add_key ok!!!  fun=1
add_key ok!!!  fun=1
add_key ok!!!  fun=1
add_key ok!!!  fun=1
add_key ok!!!  fun=1
add_key ok!!!  fun=1
add_key ok!!!  fun=1
add_key ok!!!  fun=1
add_key ok!!!  fun=1

*** Warning ***
Please verify that there is not another program running
which captures one of the keys captured by xbindkeys.
It seems that there is a conflict, and xbindkeys can't
grab all the keys defined in its configuration file.

И так вопрос: как определить кто конфликтует?
Aivar
KoliK
разве ж только xbindkeys стоит
Вот его конфиг и смотрите.
Там единственная запись подвязана на ALT + F2, CTRL ни как не задет. Хотя отключение xbindkeys помогает
Собственно из назнвания. Не работает по всей системе. Вроде ничего такого не делал, разве ж только xbindkeys стоит. Какие логи показать?
Крч просто воткнул свап и проблема решилась. Спасибо всем.