Problem with hardware acceleration with Intel-Graphics (Haswell)

[Acer-Notebook-Optimus]

If I start a mp4-video in terminal with io.elementary.videos the following failure is in terminal displayed:

tux@tux-AspireG:~/Videos$ io.elementary.videos 'Simple Minds - Glittering Prize Acoustic.mp4'

(io.elementary.videos:3823): GLib-GIO-CRITICAL **: 20:16:04.921: g_mount_get_default_location: assertion 'G_IS_MOUNT (mount)' failed

(io.elementary.videos:3823): GLib-GIO-CRITICAL **: 20:16:04.928: g_mount_get_default_location: assertion 'G_IS_MOUNT (mount)' failed

(io.elementary.videos:3823): GLib-GIO-CRITICAL **: 20:16:05.065: g_mount_get_default_location: assertion 'G_IS_MOUNT (mount)' failed

(io.elementary.videos:3823): GLib-GIO-CRITICAL **: 20:16:05.084: g_mount_get_default_location: assertion 'G_IS_MOUNT (mount)' failed libGL error: failed to create drawable libGL error: failed to create drawable

(io.elementary.videos:3823): Gdk-ERROR **: 20:17:07.834: The program 'io.elementary.videos' received an X Window System error. This probably reflects a bug in the program. The error was 'GLXBadContext'. (Details: serial 31957 error_code 158 request_code 152 (GLX) minor_code 26) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.) Trace/Breakpoint ausgelöst

Hardwareaccelleration with vlc and mpv from app store installed runs fine without failure!

tux@tuxAspire-G:~/Videos$ vlc 'Simple Minds - Glittering Prize Acoustic.mp4' VLC media player 3.0.8 Vetinari (revision 3.0.8-0-gf350b6b5a7) [0000560ec774d570] main libvlc: VLC wird mit dem Standard-Interface ausgeführt. Benutzen Sie 'cvlc', um VLC ohne Interface zu verwenden. libva info: VA-API version 1.1.0 libva info: va_getDriverName() returns 0 libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so libva info: Found init function __vaDriverInit_1_1 libva info: va_openDriver() returns 0 [00007f10e4c07a90] avcodec decoder: Using Intel i965 driver for Intel(R) Haswell Mobile - 2.1.0 for hardware decoding QObject::~QObject: Timers cannot be stopped from another thread

tux@tux-Aspire-G:~/Videos$ mpv 'Simple Minds - Glittering Prize Acoustic.mp4' Playing: Simple Minds - Glittering Prize Acoustic.mp4 (+) Video --vid=1 () (h264 1280x720 25.000fps) (+) Audio --aid=1 --alang=und () (aac 2ch 44100Hz) AO: [pulse] 44100Hz stereo 2ch float Using hardware decoding (vaapi). VO: [opengl] 1280x720 vaapi[nv12] AV: 00:00:48 / 00:04:07 (19%) A-V: 0.000

Hope this was helpfull!