https://bugs.kde.org/show_bug.cgi?id=426136
thetechguy1...@gmail.com changed:
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CC| |thetechguy1...@gmail.com
--- Comment #2 from thetechguy1...@gmail.com ---
(In reply to Durrani from comment #0)
> Created attachment 131379 [details]
> Before neon 20.04 upgrade multiple Display Configuration
>
> SUMMARY
>
> My Laptop HP ProBook 450 G6 is having one HDMI and one USB Type-C
> DisplayPort.
> I used to connect two external Monitors one using direct HDMI and another
> using a USB Type-C to HDMI adapter (Old Screenshot Attached). This
> configuration worked out of the box without installing any extra packages.
> But after the recent upgrade to KDE neon 20.04 the USB Type-C port stopped
> working as a DisplayPort. It is working as normal USB port though I can
> transfer files and connect my phone etc but when I connect the a USB-C
> display cable it is not detected at all.
>
> Things I Tried:
> 1. Tested 3 different monitors using USB Type-C to HDMI adapter.
> 2. Tested another USB Type-C to HDMI adapter.
> 3. Tested the same combination of hardware on a MacBook and it worked fine.
> 4. Installed the DisplayLink Driver
> (https://www.displaylink.com/downloads/ubuntu)
> 5. Installed nvidia-driver-440 but after reboot the whole UI messed up so
> much that I had to re-install the OS.
> 6. Tested using a Live Image.
>
> STEPS TO REPRODUCE
> 1. Get a device with a DisplayPort compatible USB Type-C port.
> 2. Find a USB Type-C to HDMI adapter generally available for MacBooks.
> 3. Install latest KDE neon 20.04
> 4. Try to connect an HDMI monitor using USB Type-C adapter and it won't work.
>
> OBSERVED RESULT
> Support for DisplayPort over USB Type-C is removed.
>
> EXPECTED RESULT
> DisplayPort over USB Type-C should work as before KDE neon 20.04 upgrade
>
> SOFTWARE/OS VERSIONS
> Linux: KDE neon
> KDE Plasma Version: 5.19.4
> KDE Frameworks Version: 5.73.0
> Qt Version: 5.14.2
> Kernel Version: 5.4.0-45-generic
>
> dev@neonBook:~ $ neofetch
> OS: KDE neon User Edition 5.19 x86_64
> Host: HP ProBook 450 G6
> Kernel: 5.4.0-45-generic
> Uptime: 43 mins
> Packages: 1936 (dpkg), 6 (snap)
> Shell: bash 5.0.17
> Resolution: 1366x768, 1920x1080
> DE: Plasma
> WM: KWin
> WM Theme: McMojave
> Theme: Breeze Dark [Plasma], Breeze [GTK2/3]
> Icons: breeze-dark [Plasma], breeze-dark [GTK2/3]
> Terminal: konsole
> Terminal Font: Ubuntu Mono 12
> CPU: Intel i7-8565U (8) @ 4.600GHz
> GPU: NVIDIA GeForce MX130
> GPU: Intel UHD Graphics 620
> Memory: 4121MiB / 15886MiB
>
>
> ADDITIONAL INFORMATION
>
> dev@neonBook:~ $ sudo ubuntu-drivers devices
> == /sys/devices/pci0000:00/0000:00:1c.0/0000:01:00.0 ==
> modalias : pci:v000010DEd0000174Dsv0000103Csd00008542bc03sc02i00
> vendor : NVIDIA Corporation
> model : GM108M [GeForce MX130]
> driver : nvidia-driver-440-server - distro non-free
> driver : nvidia-driver-418-server - distro non-free
> driver : nvidia-driver-435 - distro non-free
> driver : nvidia-driver-440 - distro non-free recommended
> driver : nvidia-driver-390 - distro non-free
> driver : xserver-xorg-video-nouveau - distro free builtin
> dev@neonBook:~ $
>
>
>
> dev@neonBook:~ $ lsusb
> Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> Bus 001 Device 005: ID 06cb:00b7 Synaptics, Inc.
> Bus 001 Device 004: ID 1d57:ad17 Xenta ZELOTES GAME MOUSE
> Bus 001 Device 003: ID 04ca:7095 Lite-On Technology Corp. HP HD Camera
> Bus 001 Device 006: ID 8087:0aaa Intel Corp.
> Bus 001 Device 002: ID 413c:2107 Dell Computer Corp. Dell USB Entry Keyboard
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> dev@neonBook:~ $
>
>
>
> dev@neonBook:~ $ xrandr
> Screen 0: minimum 320 x 200, current 3286 x 1080, maximum 16384 x 16384
> eDP-1 connected 1366x768+0+312 (normal left inverted right x axis y axis)
> 344mm x 194mm
> 1366x768 60.06*+
> 1360x768 59.80 59.96
> 1280x720 60.00 59.99 59.86 59.74
> 1024x768 60.04 60.00
> 960x720 60.00
> 928x696 60.05
> 896x672 60.01
> 1024x576 59.95 59.96 59.90 59.82
> 960x600 59.93 60.00
> 960x540 59.96 59.99 59.63 59.82
> 800x600 60.00 60.32 56.25
> 840x525 60.01 59.88
> 864x486 59.92 59.57
> 800x512 60.17
> 700x525 59.98
> 800x450 59.95 59.82
> 640x512 60.02
> 720x450 59.89
> 700x450 59.96 59.88
> 640x480 60.00 59.94
> 720x405 59.51 58.99
> 684x384 59.88 59.85
> 680x384 59.80 59.96
> 640x400 59.88 59.98
> 576x432 60.06
> 640x360 59.86 59.83 59.84 59.32
> 512x384 60.00
> 512x288 60.00 59.92
> 480x270 59.63 59.82
> 400x300 60.32 56.34
> 432x243 59.92 59.57
> 320x240 60.05
> 360x202 59.51 59.13
> 320x180 59.84 59.32
> HDMI-1 connected primary 1920x1080+1366+0 (normal left inverted right x axis
> y axis) 527mm x 296mm
> 1920x1080 60.00*+ 50.00 59.94
> 1680x1050 59.88
> 1600x900 60.00
> 1280x1024 60.02
> 1440x900 59.90
> 1280x800 59.91
> 1280x720 60.00 50.00 59.94
> 1024x768 60.00
> 800x600 60.32
> 720x576 50.00
> 720x480 60.00 59.94
> 640x480 60.00 59.94
> DP-1 disconnected (normal left inverted right x axis y axis)
> HDMI-2 disconnected (normal left inverted right x axis y axis)
> DVI-I-5-4 disconnected (normal left inverted right x axis y axis)
> DVI-I-4-3 disconnected (normal left inverted right x axis y axis)
> DVI-I-3-2 disconnected (normal left inverted right x axis y axis)
> DVI-I-2-1 disconnected (normal left inverted right x axis y axis)
I too have a similar situation with my ASUS TUF Gaming A15 (Model FA506IU,
circa 2020) - DP over USB Type C is not working either. Similar configs except
I have a 144Hz internal display and a 75Hz external display with the same
methodology.
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