I tried setting the "DRI" option to "false" (and to "2", as suggested by ArchWiki), but the result is the same ---maybe due to the fact that I also have a discrete display (Nvidia Optimus):
$ sudo lshw -c video *-display UNCLAIMED description: VGA compatible controller product: GK208M [GeForce GT 730M] vendor: NVIDIA Corporation physical id: 0 bus info: pci@0000:02:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller cap_list configuration: latency=0 resources: memory:f0000000-f0ffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:3000(size=128) *-display description: VGA compatible controller product: 4th Gen Core Processor Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 06 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:32 memory:f1000000-f13fffff memory:e0000000- efffffff ioport:4000(size=64) memory:c0000-dffff Or maybe it's something in my modprobe.d directory: $ for file in `ls`; do echo -e "\n\n#$(pwd)/$file:" >> /tmp/combined.txt; cat $file >> /tmp/combined.txt; done && cat /tmp/combined.txt #/etc/modprobe.d/amd64-microcode-blacklist.conf: # The microcode module attempts to apply a microcode update when # it autoloads. This is not always safe, so we block it by default. blacklist microcode #/etc/modprobe.d/bumblebee.conf: # This file is installed by bumblebee, do NOT edit! # to be used by kmod / module-init-tools, and installed in /etc/modprobe.d/ # or equivalent # do not automatically load nouveau as it may prevent nvidia from loading blacklist nouveau # do not automatically load nvidia as it's unloaded anyway when bumblebeed # starts and may fail bumblebeed to disable the card in a race condition. # Debian blacklist nvidia blacklist nvidia-current blacklist nvidia-legacy-304xx blacklist nvidia-legacy-340xx # Ubuntu blacklist nvidia blacklist nvidia-current blacklist nvidia-current-updates # 304 blacklist nvidia-304 blacklist nvidia-304-updates blacklist nvidia-experimental-304 # 310 blacklist nvidia-310 blacklist nvidia-310-updates blacklist nvidia-experimental-310 # 313 blacklist nvidia-313 blacklist nvidia-313-updates blacklist nvidia-experimental-313 # 319 blacklist nvidia-319 blacklist nvidia-319-updates blacklist nvidia-experimental-319 # 325 blacklist nvidia-325 blacklist nvidia-325-updates blacklist nvidia-experimental-325 # 331 blacklist nvidia-331 blacklist nvidia-331-updates blacklist nvidia-experimental-331 # 334 blacklist nvidia-334 blacklist nvidia-334-updates blacklist nvidia-experimental-334 # 337 blacklist nvidia-337 blacklist nvidia-337-updates blacklist nvidia-experimental-337 # 340 blacklist nvidia-340 blacklist nvidia-340-updates blacklist nvidia-experimental-340 # 343 blacklist nvidia-343 blacklist nvidia-343-updates blacklist nvidia-experimental-343 # 346 blacklist nvidia-346 blacklist nvidia-346-updates blacklist nvidia-experimental-346 # 349 blacklist nvidia-349 blacklist nvidia-349-updates blacklist nvidia-experimental-349 # 352 blacklist nvidia-352 blacklist nvidia-352-updates blacklist nvidia-experimental-352 # 355 blacklist nvidia-355 blacklist nvidia-355-updates blacklist nvidia-experimental-355 # 358 blacklist nvidia-358 blacklist nvidia-358-updates blacklist nvidia-experimental-358 # 361 blacklist nvidia-361 blacklist nvidia-361-updates blacklist nvidia-experimental-361 # 364 blacklist nvidia-364 blacklist nvidia-364-updates blacklist nvidia-experimental-364 #/etc/modprobe.d/dkms.conf: # modprobe information used for DKMS modules # # This is a stub file, should be edited when needed, # used by default by DKMS. #/etc/modprobe.d/i915.conf: options i915 i915_enable_rc6=7 i915_enable_fbc=1 lvds_downclock=1 #/etc/modprobe.d/intel-microcode-blacklist.conf: # The microcode module attempts to apply a microcode update when # it autoloads. This is not always safe, so we block it by default. blacklist microcode #/etc/modprobe.d/nvidia-blacklists-nouveau.conf: # You need to run "update-initramfs -u" after editing this file. # see #580894 blacklist nouveau #/etc/modprobe.d/nvidia.conf: install nvidia modprobe -i nvidia-current $CMDLINE_OPTS install nvidia-modeset modprobe nvidia ; modprobe -i nvidia-current- modeset $CMDLINE_OPTS install nvidia-uvm modprobe nvidia ; modprobe -i nvidia-current-uvm $CMDLINE_OPTS remove nvidia modprobe -r -i nvidia-modeset nvidia-uvm nvidia # These aliases are defined in *all* nvidia modules. # Duplicating them here sets higher precedence and ensures the selected # module gets loaded instead of a random first match if more than one # version is installed. See #798207. alias pci:v000010DEd00000E00sv*sd*bc04sc80i00* nvidia alias pci:v000010DEd00000AA3sv*sd*bc0Bsc40i00* nvidia alias pci:v000010DEd*sv*sd*bc03sc02i00* nvidia alias pci:v000010DEd*sv*sd*bc03sc00i00* nvidia #/etc/modprobe.d/nvidia-kernel-common.conf: alias char-major-195* nvidia #options nvidia NVreg_DeviceFileUID=0 NVreg_DeviceFileGID=44 NVreg_DeviceFileMode=0660 # To enable FastWrites and Sidebus addressing, uncomment these lines # options nvidia NVreg_EnableAGPSBA=1 # options nvidia NVreg_EnableAGPFW=1 #/etc/modprobe.d/oss-compat.conf: softdep snd-pcm post: snd-pcm-oss softdep snd-mixer post: snd-mixer-oss softdep snd-seq post: snd-seq-midi snd-seq-oss
