Questions[opengl](ubuntu)

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'. However I find llvmpipe (LLVM 11.0.0, 256 bits) is used but not the integrated graphics card.

I believe some other issues are due to this, such as:

• xrandr failed to get size of gamma for output default
• the screen resolution can only be set to one value
• no control bar for screen brightness

Here are some info:

• linux kernel

➜  ~ uname -r 
5.4.0-56-generic

• lspci

➜  ~ lspci -nnk | grep -iA2 VGA   
0000:00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:9a49] (rev 01)
    DeviceName: VGA
    Subsystem: ASUSTeK Computer Inc. Device [1043:13e2]
    Kernel modules: i915

• inxi

(as you can see, the driver for Intel graphics is not loaded)

➜  ~ inxi -G  
Graphics:  Device-1: Intel driver: N/A 
           Device-2: IMC Networks USB2.0 HD IR UVC WebCam type: USB driver: uvcvideo 
           Display: x11 server: X.Org 1.20.8 driver: fbdev unloaded: modesetting resolution: 3300x2200~90Hz 
           OpenGL: renderer: llvmpipe (LLVM 11.0.0 256 bits) v: 4.5 Mesa 21.0.0-devel (git-3f0da80 2020-12-10 focal-oibaf-ppa)

• glxinfo

➜  ~ glxinfo -B
name of display: :1
display: :1  screen: 0
direct rendering: Yes
Extended renderer info (GLX_MESA_query_renderer):
    Vendor: Mesa/X.org (0xffffffff)
    Device: llvmpipe (LLVM 11.0.0, 256 bits) (0xffffffff)
    Version: 21.0.0
    Accelerated: no
    Video memory: 15694MB
    Unified memory: no
    Preferred profile: core (0x1)
    Max core profile version: 4.5
    Max compat profile version: 3.1
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.2
OpenGL vendor string: Mesa/X.org
OpenGL renderer string: llvmpipe (LLVM 11.0.0, 256 bits)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 21.0.0-devel (git-3f0da80 2020-12-10 focal-oibaf-ppa)
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile

OpenGL version string: 3.1 Mesa 21.0.0-devel (git-3f0da80 2020-12-10 focal-oibaf-ppa)
OpenGL shading language version string: 1.40
OpenGL context flags: (none)

OpenGL ES profile version string: OpenGL ES 3.2 Mesa 21.0.0-devel (git-3f0da80 2020-12-10 focal-oibaf-ppa)
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20

• lshw

➜  ~ sudo lshw -c video
  *-display UNCLAIMED       
       description: VGA compatible controller
       product: Intel Corporation
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 01
       width: 64 bits
       clock: 33MHz
       capabilities: pciexpress msi pm vga_controller bus_master cap_list
       configuration: latency=0
       resources: iomemory:600-5ff iomemory:400-3ff memory:603e000000-603effffff memory:4000000000-400fffffff ioport:3000(size=64) memory:c0000-dffff memory:4010000000-4016ffffff memory:4020000000-40ffffffff

• dmesg

➜  ~ dmesg | grep drm 
[    1.420124] systemd[1]: Starting Load Kernel Module drm...
[    1.428692] systemd[1]: [email protected]: Succeeded.
[    1.428949] systemd[1]: Finished Load Kernel Module drm.
[    1.667732] [drm] Your graphics device 9a49 is not properly supported by the driver in this

where the last one log is:

[drm] Your graphics device 9a49 is not properly supported by the driver in this
kernel version. To force driver probe anyway, use i915.force_probe=9a49
module parameter or CONFIG_DRM_I915_FORCE_PROBE=9a49 configuration option,
or (recommended) check for kernel updates.

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

I guess the root cause is that the graphics card is not supported by the current driver i915. I don't know what to do or if there are other reasons for this issue. Here are what I have tried:

• 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
• configure xorg to prefer the Intel or disable modeswitching out of IGD, as the way in Ubuntu 18.04 not working with Intel Integrated Graphics
• remove xserver-xorg-video-fbdev, as the way in https://forums.linuxmint.com/viewtopic.php?t=287323, which only made the boot procedure stuck in splash screen.

None of them works for me. I would be grateful if someone could give any help or ideas.

I'm not really asking a question, but this ___ website won't allow me to do this any other way.

I ran into a problem today using GTK under Win10's Linux subsystem (specifically Ubuntu 18.04). The error msg was:

libGL error: No matching fbConfigs or visuals found
libGL error: failed to load driver: swrast

Someone else ran into this while using Steam, and there are some answers here: Steam libGL error. The second answer, "Windows Subsystem for Linux (WSL) has same error", is the one that led me to the solution, however that answer didn't work out of the box.

Their answer concerns a directory /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1. That directory does not exist in my system, but I'll provide the solution that did work on my stem in my answer (to myself).

I realize this is a terribly clumsy way to answer this question. However, I felt it was important to answer it, because it took me a lot of fiddling around to find an answer that worked for me, and others may have the same issue. I couldn't leave an answer on the original question, because it's been closed; and I couldn't comment on the answer that led me to the solution, because I don't have sufficient reputation. And I couldn't post to the meta-questions either. Can you say "Catch-22"? I knew you could.

I currently installed ubuntu 11.10 on my acer netbook. I have problem getting some packages I need. I am using the most updated version and have a wifi connection on my campus. This is what my instructor wishes for us to do:

1. select Applications/Accessories/Terminal on the Ubuntu desktop
2. type ls /usr/include/GL
   if glut.h gl.h etc are there, great
   if not, install it sudo apt-get install libglut3-dev
3. I then copied program1.c to the desktop
4. cd desktop
5. gcc -lglut -lGLU program1.c note l is a lower-case L, which means library in UNIX
6. ./a.out to execute

I complete step 2, in which returns:

sudo: ls/brandon/include/GL: command not found

so from here I do the apt-get and try to install it but returns me with this:

E: Unable to locate package libglut3-dev

Does this have to do with my connection or is there something I need to be doing on my system for it to find the package and install it. I'm really new to ubuntu and could use some help just getting started.

I have a Dell Mini 1012 which has an Intel N450 processor and GMA 3150 integrated graphics card running Ubuntu 10.10. According to Intel's website the graphics card supports OpenGL 2.0.

http://software.intel.com/en-us/articles/quick-reference-guide-to-intel-integrated-graphics/#9

But when I type glxinfo in terminal the OpenGL version string gives me the following

OpenGL version string: 1.4 Mesa 7.9-devel

I have installed the latest drivers but it didn't work. So, how can I enable OpenGL 2.0 on this card?

I want to setup openGL programming environment on ubuntu. What packages or tools I should install and what is the best way of getting into openGL as a newbie.