No output from the DVI connection.
No output from the DVI connection.
tl;dr: I have installed PopOS on my machine and my DVI port stopped working. Set up: CPU: AMD FX-8350 GPU: MSI AMD R9 380 4G (display port, hdmi, 2x DVI - I use DVI only in the upper row, because I do not have adapter for the other one) primary monitor: AG neovo 1920x1080, connects directly to GPU via HDMI secondary monitor: Benq GL2450 1920x1080, connects with VGA through VGA/DVI adapter to DVI port on GPU disclaimer: all HW, cables, adapters are functional. On previous installation (and reinstallation for testing) of Windows 10 all works as desired. Because of most of my work I am doing is in WSL and all my games should be playable on linux too, I decided to go full on linux and I chose PopOS. Everything works fine, except that my secondary monitor plugged into DVI claims, that there is no signal. If I plug it into HDMI via VGA/HDMI adapter, then it works just fine. But then my other monitor has nowhere to be plugged. During boot both monitors work as excepted, but the moment linux is loaded the secondary monitor shuts down with "no signal" message. However the monitor gets detected correctly in settings and I can change it's resolution, relative position, etc. Just no signal. In case it is a distro specific problem, I tried both live usb and install of different distros - Ubuntu, Linux Mint, openSUSE Tumbleweed. I encountered the same issue in all of them. While in Ubuntu (default kernel 5.15) I tried few different kernels - 5.16, 5.14, 5.11. Unfortunately no change in behaviour. Some searching gave me some very old and some newer posts dealing with similar issue with completely different hardware. Usually they led to no resolution or dealt with Nvidia GPU. Atm. I am back to installation of PopOS 22.04. Here is some info that I found out is usually useful when dealing with this kind of problems: user@pop-os:~$ uname -r 5.17.5-76051705-generic ------------------------------------------------- user@pop-os:~$ sudo lshw -c video *-display description: VGA compatible controller product: Tonga PRO [Radeon R9 285/380] vendor: Advanced Micro Devices, Inc. [AMD/ATI] physical id: 0 bus info: pci@0000:01:00.0 logical name: /dev/fb0 version: f1 width: 64 bits clock: 33MHz capabilities: pm pciexpress msi vga_controller bus_master cap_list rom fb configuration: depth=32 driver=amdgpu latency=0 resolution=1920,1080 resources: irq:35 memory:c0000000-cfffffff memory:d0000000-d01fffff ioport:e000(size=256) memory:fe900000-fe93ffff memory:c0000-dffff ------------------------------------------------- user@pop-os:~$ xrandr -q Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384 DisplayPort-0 disconnected (normal left inverted right x axis y axis) HDMI-A-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 598mm x 336mm 1920x1080 60.00 + 50.00 59.94* 1680x1050 59.88 1280x1024 75.02 60.02 1440x900 74.98 59.90 1280x800 60.00 1280x720 60.00 50.00 59.94 1024x768 75.03 70.07 60.00 832x624 74.55 800x600 72.19 75.00 60.32 56.25 720x576 50.00 720x480 60.00 59.94 640x480 75.00 72.81 66.67 60.00 59.94 720x400 70.08 DVI-D-0 disconnected (normal left inverted right x axis y axis) DVI-D-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 531mm x 298mm 1920x1080 60.00*+ 1680x1050 59.95 1600x900 60.00 1280x1024 75.02 60.02 1440x900 60.00 1280x800 59.81 1152x864 75.00 1280x720 60.00 1024x768 75.03 60.00 832x624 74.55 800x600 75.00 60.32 640x480 75.00 59.94 720x400 70.08 My only idea how to resolve this issue is buying VGA to Display port adapter and try how that works. However even if that works, that leaves my DVI port unusable. Any advice how to resolve this issue?
Sure, I can revert the text color to the default setting for you.
On those older AMD graphics cards, a DVI port shares space with an HDMI connection... meaning you can't link three monitors—one via HDMI and two via DVI... it's usually either two DVI ports or one HDMI plus one DVI plus a display port. If your card matches the listed specs (DVI-I x1, DVI-D x1), the analog pins are only on the DVI-I connector, letting you use a simple passive adapter that just rewires the connections.
It seems like the problem might be tied to a driver issue. Typically, popular distributions bundle drivers, so an AMD driver is available for Ubuntu 18.04.5, 20.04.4, and even Linux if you know how to set it up on PopOS. Trying it could work if you have a clean install and are comfortable wiping the system. Installing drivers this way can be unpredictable on Linux.
I attempted to set up the driver for Ubuntu 20.04, but received a denial due to an unsupported ID 'pop'. When using Ubuntu 22.04, it encountered another issue. I found some guidance in an instruction PDF, but I'm not sure if this applies to PopOS or other distributions.
Your card is correct. You're connecting via the DVI-I port using a passive DVI-VGA adapter.