cat /var/log/Xorg.0.log | egrep 'intel|radeon'
[ 28.470] (II) LoadModule: "intel"
[ 28.470] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
[ 28.506] (II) Module intel: vendor="X.Org Foundation"
[ 28.507] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets:
[ 28.507] (II) intel: Driver for Intel(R) HD Graphics
[ 28.507] (II) intel: Driver for Intel(R) Iris(TM) Graphics
[ 28.507] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics
[ 28.538] (II) intel(0): Using Kernel Mode Setting driver: i915, version 1.6.0 20171023
[ 28.538] (II) intel(0): SNA compiled: xserver-xorg-video-intel 2:2.99.917+git20171229-1 (Timo Aaltonen <tjaalton@debian.org>)
[ 28.538] (II) intel(0): SNA compiled for use with valgrind
[ 28.566] (--) intel(0): Integrated Graphics Chipset: Intel(R) HD Graphics 4000
[ 28.566] (--) intel(0): CPU: x86-64, sse2, sse3, ssse3, sse4.1, sse4.2, avx; using a maximum of 2 threads
[ 28.566] (II) intel(0): Creating default Display subsection in Screen section
[ 28.566] (==) intel(0): Depth 24, (--) framebuffer bpp 32
[ 28.566] (==) intel(0): RGB weight 888
[ 28.566] (==) intel(0): Default visual is TrueColor
[ 28.566] (**) intel(0): Option "AccelMethod" "sna"
[ 28.566] (**) intel(0): Option "DRI" "3"
[ 28.566] (**) intel(0): Option "TripleBuffer" "true"
[ 28.566] (**) intel(0): Option "TearFree" "true"
[ 28.567] (II) intel(0): Output LVDS1 has no monitor section
[ 28.567] (**) intel(0): Found backlight control interface intel_backlight (type 'raw') for output LVDS1
[ 28.567] (II) intel(0): Enabled output LVDS1
[ 28.567] (II) intel(0): Output VGA1 has no monitor section
[ 28.567] (II) intel(0): Enabled output VGA1
[ 28.567] (II) intel(0): Output HDMI1 has no monitor section
[ 28.567] (II) intel(0): Enabled output HDMI1
[ 28.567] (II) intel(0): Output DP1 has no monitor section
[ 28.567] (II) intel(0): Enabled output DP1
[ 28.567] (--) intel(0): Using a maximum size of 256x256 for hardware cursors
[ 28.567] (II) intel(0): Output VIRTUAL1 has no monitor section
[ 28.567] (II) intel(0): Enabled output VIRTUAL1
[ 28.567] (--) intel(0): Output LVDS1 using initial mode 1366x768 on pipe 0
[ 28.567] (**) intel(0): TearFree enabled
[ 28.567] (==) intel(0): Using gamma correction (1.0, 1.0, 1.0)
[ 28.567] (==) intel(0): DPI set to (96, 96)
[ 28.593] (II) intel(0): SNA initialized with Ivybridge (gen7, gt2) backend
[ 28.593] (==) intel(0): Backing store enabled
[ 28.593] (==) intel(0): Silken mouse enabled
[ 28.594] (II) intel(0): HW Cursor enabled
[ 28.594] (II) intel(0): RandR 1.2 enabled, ignore the following RandR disabled message.
[ 28.594] (==) intel(0): DPMS enabled
[ 28.594] (==) intel(0): Display hotplug detection enabled
[ 28.594] (II) intel(0): [DRI2] Setup complete
[ 28.594] (II) intel(0): [DRI2] DRI driver: i965
[ 28.594] (II) intel(0): [DRI2] VDPAU driver: va_gl
[ 28.594] (II) intel(0): direct rendering: DRI2 DRI3 enabled
[ 28.594] (II) intel(0): hardware support for Present enabled
[ 29.133] (II) intel(0): switch to mode 1366x768@60.0 on LVDS1 using pipe 0, position (0, 0), rotation normal, reflection none
[ 29.147] (II) intel(0): Setting screen physical size to 361 x 203
[ 30.716] (II) intel(0): EDID vendor "SEC", prod id 14410
[ 30.716] (II) intel(0): Printing DDC gathered Modelines:
[ 30.716] (II) intel(0): Modeline "1366x768"x0.0 70.70 1366 1414 1446 1486 768 770 775 792 -hsync -vsync (47.6 kHz eP)
cat /etc/environment
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"
CLUTTER_PAINT=disable-clipped-redraws:disable-culling
CLUTTER_VBLANK=none
cat /etc/X11/xorg.conf.d/20-intel.conf
Section "Device"
Identifier "Intel Graphics"
Driver "Intel"
Option "AccelMethod" "sna"
Option "TearFree" "true"
Option "TripleBuffer" "true"
Option "DRI" "3"
BusID "PCI:0:2:0"
EndSection
cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-4.15.0-34-generic root=UUID=99f01cac-375e-4bc5-b47c-933366195d16 ro quiet splash vt.handoff=1