Lenovo P1 DRI_PRIME issue

# Thinkpad P1 w/ Quadro P1000

$ lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 630 (Mobile)
01:00.0 VGA compatible controller: NVIDIA Corporation GP107GLM [Quadro P1000 Mobile] (rev a1)

$ cat /proc/cmdline 
BOOT_IMAGE=/boot/vmlinuz-linux root=/dev/mapper/nvme-root rw drm.rnodes=1 net.ifnames=1

$ pacman -Q | grep -P '(video-(intel|nouveau)|^linux |xorg-server )'
linux 5.0.9.arch1-1
xf86-video-intel 1:2.99.917+863+g6afed33b-1
xf86-video-nouveau 1.0.16-1
xorg-server 1.20.4-1

$ ls -l /dev/dri/
total 0
drwxr-xr-x  2 root root        120 Apr 30 12:32 by-path
crw-rw----+ 1 root video  226,   0 Apr 30 12:32 card0
crw-rw----+ 1 root video  226,   1 Apr 30 12:32 card1
crw-rw-rw-  1 root render 226, 128 Apr 30 12:32 renderD128
crw-rw-rw-  1 root render 226, 129 Apr 30 12:32 renderD129

$ id
uid=1000(jamin) gid=1000(jamin) groups=1000(jamin),4(adm),10(wheel),56(bumblebee),78(kvm),91(video),92(audio),95(storage),100(users),108(vboxusers),986(render),990(docker),995(printadmin)

$ xrandr --listproviders 

Providers: number : 2
Provider 0: id: 0x6d cap: 0xb, Source Output, Sink Output, Sink Offload crtcs: 4 outputs: 2 associated providers: 1 name:Intel
Provider 1: id: 0x47 cap: 0x7, Source Output, Sink Output, Source Offload crtcs: 4 outputs: 4 associated providers: 1 name:nouveau

$ xrandr --setprovideroffloadsink nouveau Intel

$ LIBGL_DEBUG=verbose DRI_PRIME=1 glxinfo | grep "OpenGL vendor string"
libGL: Can't open configuration file /etc/drirc: No such file or directory.
libGL: Can't open configuration file /home/jamin/.drirc: No such file or directory.
libGL: pci id for fd 5: 10de:1cbb, driver nouveau
libGL: MESA-LOADER: dlopen(/usr/lib/dri/nouveau_dri.so)
libGL: Can't open configuration file /etc/drirc: No such file or directory.
libGL: Can't open configuration file /home/jamin/.drirc: No such file or directory.
libGL: Can't open configuration file /etc/drirc: No such file or directory.
libGL: Can't open configuration file /home/jamin/.drirc: No such file or directory.
libGL: Can't open configuration file /etc/drirc: No such file or directory.
libGL: Can't open configuration file /home/jamin/.drirc: No such file or directory.
nvc0_screen_create:1007 - Error allocating PGRAPH context for M2MF: -16
libGL error: failed to create dri screen
libGL error: failed to load driver: nouveau
libGL: Can't open configuration file /etc/drirc: No such file or directory.
libGL: Can't open configuration file /home/jamin/.drirc: No such file or directory.
libGL: pci id for fd 4: 8086:3e9b, driver i965
libGL: MESA-LOADER: dlopen(/usr/lib/dri/i965_dri.so)
libGL: Can't open configuration file /etc/drirc: No such file or directory.
libGL: Can't open configuration file /home/jamin/.drirc: No such file or directory.
libGL: Can't open configuration file /etc/drirc: No such file or directory.
libGL: Can't open configuration file /home/jamin/.drirc: No such file or directory.
libGL: Using DRI2 for screen 0
libGL: Can't open configuration file /etc/drirc: No such file or directory.
libGL: Can't open configuration file /home/jamin/.drirc: No such file or directory.
OpenGL vendor string: Intel Open Source Technology Center
libGL: Can't open configuration file /etc/drirc: No such file or directory.
libGL: Can't open configuration file /home/jamin/.drirc: No such file or directory.
libGL: Can't open configuration file /etc/drirc: No such file or directory.
libGL: Can't open configuration file /home/jamin/.drirc: No such file or directory.

#### RESOLUTION

Apply:
https://github.com/karolherbst/linux/commit/ecb1d072ebdb5538e5b4fd5210c4173dd7f33719.patch