HDMI (nvidia 1050TI) no detect - fedora 32, fedora 33 beta

[carabao72]

hello,

Here are several versions that I install your plasma/kde updates without too much problem.

Since the latest versions of kde/plasma under fedora32 and the latest under fedora 33 beta, I have lost the detection of the HDMI port connected to my nvidia 1050TI graphics card.
Unable to enable hdmi port when I connect the screen, it is detected and then gets old a few seconds later.

HDMI-1 disconnected (normal left inverted right x axis y axis)
        HDCP Content Type: HDCP Type0 
                supported: HDCP Type0, HDCP Type1
        Content Protection: Undesired 
                supported: Undesired, Desired, Enabled
        max bpc: 12 
                range: (8, 12)
        content type: No Data 
                supported: No Data, Graphics, Photo, Cinema, Game
        Colorspace: Default 
                supported: Default, SMPTE_170M_YCC, BT709_YCC, XVYCC_601, XVYCC_709, SYCC_601, opYCC_601, opRGB, BT2020_CYCC, BT2020_RGB, BT2020_YCC, DCI-P3_RGB_D65, DCI-P3_RGB_Theater
        aspect ratio: Automatic 
                supported: Automatic, 4:3, 16:9
        Broadcast RGB: Automatic 
                supported: Automatic, Full, Limited 16:235
        audio: auto 
                supported: force-dvi, off, auto, on
        link-status: Good 
                supported: Good, Bad
        CONNECTOR_ID: 112 
                supported: 112
        non-desktop: 0 
                range: (0, 1)

xrandr -q

Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
eDP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 382mm x 215mm
   .........
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)

What do you think? Thank you

[ZaWertun]

Don't think it can be caused by KDE updates.
It could be something wrong with new nvidia drivers or linux kernel.
Are you using nouveau or proprietary nvidia driver?

[ZaWertun]

Looks like similar bug: https://bugs.kde.org/show_bug.cgi?id=362058.
Or not?

[carabao72]

hello,

thank you for your response.

nvidia drivers 455.28 , kernel 5.8.14

 ```

*-display
description: 3D controller
product: GP107M [GeForce GTX 1050 Ti Mobile]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: a1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list rom
configuration: driver=nvidia latency=0
resources: irq:131 memory:de000000-deffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:e000(size=128) memory:df000000-df07ffff
*-display
description: VGA compatible controller
product: HD Graphics 630
vendor: Intel Corporation
physical idor : 2
bus info: pci@0000:00:02.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:127 memory:dd000000-ddffffff memory:b0000000-bfffffff ioport:f000(size=64) memory:c0000-dffff

for the bug:
Indeed, it may be on the kernel/driver side but without certainty, since several updates have arrived at the same time (kde/plasma, driver, kernel)

[g6avk]

Just FYI
My guess is the nVidia driver as I have no such issue on this box using HDMI

Kernel Version: 5.8.14-200.fc32.x86_64
Drivers from negativo17 450.80.02
Graphics Processor: GeForce GTX 650/PCIe/SSE2

[ZaWertun]

Sorry, can't say anything useful about NVidia mobile GPU's, I don't have such devices at home or at work.
Better create issue on the Red Hat Bugzilla (https://bugzilla.redhat.com) or ask a question on the Ask Fedora (https://ask.fedoraproject.org/).

[carabao72]

The problem has disappeared, the hdmi port is functional again, as it appeared without explanation.

Since yesterday, I just typed some commands such as: xrandr -q, xrandr --output HDMI --pos 1920x0 --mode 1980-1024 --rate 60, ... Restarted with no results.

However, this morning, after a shutdown of the PC yesterday, I relaunch it today and it works.

Mystery!!!