Not able to open VLC over HDMI

[fred44nl]

I have VLC 3.0.3 running on Debian 9
when I connect to my machine with Remote Desktop, I can open VLC
but this does not happen, when I open VLC on a screen that is connected with HDMI
as far as I can see, everything works over HDMI, except VLC

when I put the command vlc in Terminal, there is a complaint about "no suitable interface module" and also "interface "globalhotkeys,none"

have already looked around on the net, but no solution.
how can I solve this ??

[fred44nl]

after a long search, I found a possible solution:

As root, edit the existing file: /etc/X11/Xsession.d/98qtconfig

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# Add the following line to fix interface size problems with QT based apps like VLC export QT_AUTO_SCREEN_SCALE_FACTOR=0

but I don't have a 98qtconfig file.

another suggestion is to put the following line in terminal:

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env QT_AUTO_SCREEN_SCALE_FACTOR=0 vlc

this does open the GUI of vlc

how can I make this permanent, by editing the vlc.destop file ??

[simvrh]

I have a similar problem. VLC does not start on a PC connected to a TV (old, big) through VGA.

The proposed solution works for me (a big thanks to fred44nl!):

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env QT_AUTO_SCREEN_SCALE_FACTOR=0 vlc

I found a solution that works system-wide:

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# Write this code at the end of /etc/profile export QT_AUTO_SCREEN_SCALE_FACTOR=0

I am appending some more details about the issue in case someone else will search for it in the future.

Linux _ 4.9.0-8-amd64 #1 SMP Debian 4.9.110-3+deb9u4 (2018-08-21) x86_64 GNU/Linux
VLC media player 3.0.3 Vetinari (revision 3.0.3-1-0-gc2bb759264)

If I start vlc from the terminal, I get a lot of messages:

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...: Painter not active ...: Painter must be active to set rendering hints

And then:

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QWidget::setMinimumSize: (/QStatusBar) The largest allowed size is (16777215,16777215) QWidget::setMaximumSize: (/QStatusBar) The largest allowed size is (16777215,16777215) QWidget::setMinimumSize: (/MainInterface) The largest allowed size is (16777215,16777215) QWidget::setMinimumSize: (/MainInterface) The largest allowed size is (16777215,16777215) QWidget::setMinimumSize: (/MainInterface) The largest allowed size is (16777215,16777215)

Which is followed by a bunch of errors:

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QXcbConnection: XCB error: 2 (BadValue), sequence: 425, resource id: 0, major code: 1 (CreateWindow), minor code: 0 QXcbConnection: XCB error: 3 (BadWindow), sequence: 426, resource id: 16777221, major code: 2 (ChangeWindowAttributes), minor code: 0

Then it goes back to the "Painter not active" messages.

[fred44nl]

still trying to solve this
there are suggestions, to go back to version 2.2.7
but is that really necessary ??
what it comes down to, is that when I try to open VLC from the desktop, the program does not show.
it does, when I use RDP bit that is not showing rdp0: which has the hdmi-output.

[fred44nl]

one month later
problem still exists.
any help would be appreciated.

[unidan]

Hi,

what do you mean ? The workaround above doesn't work for you ?

The issue came from your DE or Qt support for HDpi, but not VLC.

[fred44nl]

Hi,

what do you mean ? The workaround above doesn't work for you ?

The issue came from your DE or Qt support for HDpi, but not VLC.

the mentioned work-around does not help me.
this is what happens, i.e. the video does open, but does not start:

fred44nl@Debian:~$ env QT_AUTO_SCREEN_SCALE_FACTOR=0 vlc "Video's"/*.mkv X11
VLC media player 3.0.4 Vetinari (revision 3.0.4-0-gf615db6332)
[00005590708ec1a0] main libvlc: Vlc draait met de standaardinterface. Gebruik 'cvlc' om vlc zonder interface te gebruiken.
[00005590709ad740] main audio output error: too low audio sample frequency (0)
[00007f3560ce09c0] main decoder error: failed to create audio output
[00005590709ad740] vlcpulse audio output error: digital pass-through stream connection failure: Niet ondersteund
[00005590709ad740] main audio output error: module not functional
[00007f3560ce09c0] main decoder error: failed to create audio output
[00007f353c007b90] main filter error: Failed to create video converter
libva info: VA-API version 0.39.4
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_0_39
libva info: va_openDriver() returns 0
[00007f3560c06360] avcodec decoder: Using OpenGL/VAAPI backend for VDPAU for hardware decoding
[00007f353c02c090] main filter error: Failed to create video converter
[00007f353c020500] blend blend error: no matching alpha blending routine (chroma: YUVA -> VDV0)
[00007f353c020500] main blend error: blending YUVA to VDV0 failed
[00007f353c020500] blend blend error: no matching alpha blending routine (chroma: YUVA -> VDV0)

[fred44nl]

got it working, with a few audio complaints.
got the GUI open and made several changes.
had to turn off the hardware transcoding.
this is how it looks now:

fred44nl@Debian:~$ env QT_AUTO_SCREEN_SCALE_FACTOR=0 vlc
VLC media player 3.0.4 Vetinari (revision 3.0.4-0-gf615db6332)
[00005623191dc1a0] main libvlc: Vlc draait met de standaardinterface. Gebruik 'cvlc' om vlc zonder interface te gebruiken.
[000056231926efe0] main playlist: playlist is empty
libdvdnav: Using dvdnav version 5.0.3
libdvdread: Encrypted DVD support unavailable.
************************************************
** **
** No css library available. See **
** /usr/share/doc/libdvdread4/README.css **
** for more information. **
** **
************************************************
libdvdread: Couldn't find device name.
libdvdread:DVDOpenFilePath:findDVDFile /VIDEO_TS/VIDEO_TS.IFO failed
libdvdread:DVDOpenFilePath:findDVDFile /VIDEO_TS/VIDEO_TS.BUP failed
libdvdread: Can't open file VIDEO_TS.IFO.
libdvdnav: vm: failed to read VIDEO_TS.IFO
[000056231929d750] main audio output error: too low audio sample frequency (0)
[00007f1b00ccd3e0] main decoder error: failed to create audio output
[000056231929d750] vlcpulse audio output error: digital pass-through stream connection failure: Niet ondersteund
[000056231929d750] main audio output error: module not functional
[00007f1b00ccd3e0] main decoder error: failed to create audio output
[00007f1ac8007df0] main filter error: Failed to create video converter
QObject::~QObject: Timers cannot be stopped from another thread
fred44nl@Debian:~$

[unidan]

Hi, does it work with --avcodec-hw=vaapi ?

[fred44nl]

Hi, does it work with --avcodec-hw=vaapi ?

did not try that start-option.
will do that some time later

that main thing is, that you cannot open the VLC GUI from the desktop.
it has to be done from Terminal.

[unidan]

If it fixes your issue, you will be able to freeze it into ~/.config/vlc/vlcrc.

Keep me updated on your issue.

[fred44nl]

Keep me updated on your issue.

the option "--avcodec-hw=vaapi" doesn't do any good.
this is what comes in Terminal, not just a few lines, but it goes on and on

VLC media player 3.0.4 Vetinari (revision 3.0.4-0-gf615db6332)
[00005564437f11a0] main libvlc: Vlc draait met de standaardinterface. Gebruik 'cvlc' om vlc zonder interface te gebruiken.
[00005564438d24b0] [http] lua interface: Lua HTTP interface
[00007f0914000980] main input error: unsafe option "recursive" has been ignored for security reasons
[00007f08e00009e0] main input error: unsafe option "recursive" has been ignored for security reasons
[00005564438a0b60] main audio output error: too low audio sample frequency (0)
[00007f08d81312a0] main decoder error: failed to create audio output
[00005564438a0b60] vlcpulse audio output error: digital pass-through stream connection failure: Niet ondersteund
[00005564438a0b60] main audio output error: module not functional
[00007f08d81312a0] main decoder error: failed to create audio output
libva info: VA-API version 0.39.4
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_0_39
libva info: va_openDriver() returns 0
[00007f08d80812f0] avcodec decoder: Using Intel i965 driver for Intel(R) Broxton - 1.7.3 for hardware decoding
[00007f08b80292b0] blend blend error: no matching alpha blending routine (chroma: YUVA -> VAOP)
[00007f08b80292b0] main blend error: blending YUVA to VAOP failed
[00007f08b80292b0] blend blend error: no matching alpha blending routine (chroma: YUVA -> VAOP)
[00007f08b80292b0] main blend error: blending YUVA to VAOP failed
[00007f08b80292b0] blend blend error: no matching alpha blending routine (chroma: YUVA -> VAOP)
[00007f08b80292b0] main blend error: blending YUVA to VAOP failed
[00007f08b80292b0] blend blend error: no matching alpha blending routine (chroma: YUVA -> VAOP)
[00007f08b80292b0] main blend error: blending YUVA to VAOP failed
[00007f08b80292b0] blend blend error: no matching alpha blending routine (chroma: YUVA -> VAOP)
[00007f08b80292b0] main blend error: blending YUVA to VAOP failed

note: when I turn on hardware-decoding in the settings of VLC, it is not possible to play anything.