Skype - Empty dialog

[MenthaSuaveolens]

I reinstalled LM Cinnamon some months ago. All updates of LM Cinnamon 20.2 uma have been installed. Today I needed Skype. I installed first the version from the software-center. Skype starts the dialog, but the only thing that one can notice is a white screen and of top of it a black horizontal rectangle which is flickering for a while. Skype doesn't seem to crash as an icon is dropped into status-field of the taskbar and Skype also installs as a startup-application. Skype always worked on my hardware in the past. I removed Skype and installed the Flat Hub-version instead. This version causes the same behaviour as the first mentioned one. Then I removed the Flat Hub-version ans installed .deb-package from the skype-site (the version of this package is the same as the version in the software-center). This package also gives a white dialog. Then I removed also this version. Used synaptic to remove Skype completely from the system ans reinstalled the version from the software-center. The problem persists. If one sets the dialog to full-screen, the screen is black with a white rectangle (initial size of the dialog). If one scrolls with mouse on the top of the dialog, it looks that the submenu's do drop down (but as black rectangles).

How can I solve this problem? (I use Skype now on other computer with LM xfce). I also started a VM with the latest version of LM Cinnamon and in the VM Skype starts as expected.



It looks that the gpu-software is a problem. Output of the log $HOME/.config/skypeforlinux/logs

Code: Select all

libva error: /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so init failed
[8179:1130/171845.277482:ERROR:sandbox_linux.cc(374)] InitializeSandbox() called with multiple threads in process gpu-process.
[8179:1130/171845.532039:ERROR:shared_context_state.cc(73)] Skia shader compilation error
------------------------
#version 100

precision mediump float;
precision mediump sampler2D;
uniform sampler2D uTextureSampler_0_Stage0;
varying highp vec2 vlocalCoord_Stage0;
varying highp vec4 vtexSubset_Stage0;
void main() {
    mediump vec4 outputColor_Stage0 = vec4(1.0);
    highp vec2 texCoord;
    texCoord = vlocalCoord_Stage0;
    highp vec4 subset;
    subset = vtexSubset_Stage0;
    texCoord = clamp(texCoord, subset.xy, subset.zw);
    outputColor_Stage0 = texture2D(uTextureSampler_0_Stage0, texCoord);
    {
        gl_FragColor = outputColor_Stage0;
    }
}

Errors:
0:1(10): error: GLSL 4.40 is not supported. Supported versions are: 1.10, 1.20, 1.30, 1.40, 1.50, 3.30, 4.00, 4.10, 4.20, 1.00 ES, and 3.00 ES

[MenthaSuaveolens]

Problem solved (yesterday)

1. Remove Skype
2. Remove all hidden files in the home-folder
3. Reinstall
4. Cross your fingers ... after 30 seconds the standard welcome-screen pops up, but stalls
5. Close dialog
6. Open Skype again from the taskbar => Skype starts working

Problem NOT solved (today)
/.config/skypeforlinux/logs conatins the same error-messages

libva error: /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so init failed
[5502:1201/091414.596272:ERROR:sandbox_linux.cc(374)] InitializeSandbox() called with multiple threads in process gpu-process.
[5502:1201/091414.863509:ERROR:shared_context_state.cc(73)] Skia shader compilation error
------------------------
#version 100

precision mediump float;
precision mediump sampler2D;
uniform sampler2D uTextureSampler_0_Stage0;
varying highp vec2 vlocalCoord_Stage0;
varying highp vec4 vtexSubset_Stage0;
void main() {
mediump vec4 outputColor_Stage0 = vec4(1.0);
highp vec2 texCoord;
texCoord = vlocalCoord_Stage0;
highp vec4 subset;
subset = vtexSubset_Stage0;
texCoord = clamp(texCoord, subset.xy, subset.zw);
outputColor_Stage0 = texture2D(uTextureSampler_0_Stage0, texCoord);
{
gl_FragColor = outputColor_Stage0;
}
}

Errors:
0:1(10): error: GLSL 4.40 is not supported. Supported versions are: 1.10, 1.20, 1.30, 1.40, 1.50, 3.30, 4.00, 4.10, 4.20, 1.00 ES, and 3.00 ES

[5502:1201/091414.865132:ERROR:shared_context_state.cc(73)] Skia shader compilation error
------------------------
#version 100