changed /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT to '', as the way in Ubuntu 20.04 Intel HD 615: No Brightness control or no Boot / Stuck on Boot Screen.I don't know what to do or if there are other reasons for this issue.

I guess the root cause is that the graphics card is not supported by the current driver i915. There's another log concerning i915, I'm not sure if it's related: snd_hda_codec_hdmi hdaudioC0D2: No i915 binding for Intel HDMI/DP codec Or (recommended) check for kernel updates. Module parameter or CONFIG_DRM_I915_FORCE_PROBE=9a49 configuration option, To force driver probe anyway, use i915.force_probe=9a49 Where the last one log is: Your graphics device 9a49 is not properly supported by the driver in this Your graphics device 9a49 is not properly supported by the driver in this systemd: Finished Load Kernel Module drm. systemd: Starting Load Kernel Module drm.

OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20Ĭapabilities: pciexpress msi pm vga_controller bus_master cap_list OpenGL ES profile version string: OpenGL ES 3.2 Mesa 21.0.0-devel (git-3f0da80 focal-oibaf-ppa) OpenGL shading language version string: 1.40 OpenGL version string: 3.1 Mesa 21.0.0-devel (git-3f0da80 focal-oibaf-ppa) OpenGL core profile profile mask: core profile OpenGL core profile context flags: (none) OpenGL core profile shading language version string: 4.50 OpenGL core profile version string: 4.5 (Core Profile) Mesa 21.0.0-devel (git-3f0da80 focal-oibaf-ppa) OpenGL renderer string: llvmpipe (LLVM 11.0.0, 256 bits) OpenGL: renderer: llvmpipe (LLVM 11.0.0 256 bits) v: 4.5 Mesa 21.0.0-devel (git-3f0da80 focal-oibaf-ppa)Įxtended renderer info (GLX_MESA_query_renderer):ĭevice: llvmpipe (LLVM 11.0.0, 256 bits) (0xffffffff) (as you can see, the driver for Intel graphics is not loaded) ➜ ~ inxi -Gĭevice-2: IMC Networks USB2.0 HD IR UVC WebCam type: USB driver: uvcvideoĭisplay: x11 server: X.Org 1.20.8 driver: fbdev unloaded: modesetting resolution: 3300x2200~90Hz

the screen resolution can only be set to one valueĠ000:00:02.0 VGA compatible controller : Intel Corporation Device (rev 01).

xrandr failed to get size of gamma for output default.

I believe some other issues are due to this, such as: However I find llvmpipe (LLVM 11.0.0, 256 bits) is used but not the integrated graphics card. I set up a dual-booted Ubuntu 20.04 for Asus ZenBook UX393EA, which has an integrated graphics card 'Intel(R) Iris(R) Xe Graphics'.

Intel iris x graphics