Ubuntu 20.04 does not recognize my HDMI port
Hello,
On my new Dell Inspiron 7400, I installed Ubuntu 20.04, however when I connect my second screen nothing works. I have already tried all possible NVIDIA drivers, I have access to NVIDIA X Server settings but no second screen. I have tried everything I found on different forums (reinstalling Ubuntu several times). I have also tried
The touchpad works but not the two-finger scrolling, zooming, etc. The sound and microphone do not work either while they function under Windows. Thank you for your help.
Here are some commands that may be useful for resolving my issue (I do not have a file
- ubuntu-drivers devices : (currently nvidia-driver-455 - third-party free recommended is installed)
- xrandr : (This does not seem normal)
- lspci :
Thank you for your help, I would be very grateful if you could assist me with this issue.
On my new Dell Inspiron 7400, I installed Ubuntu 20.04, however when I connect my second screen nothing works. I have already tried all possible NVIDIA drivers, I have access to NVIDIA X Server settings but no second screen. I have tried everything I found on different forums (reinstalling Ubuntu several times). I have also tried
sudo ubuntu-drivers autoinstallwith the PPAs.
The touchpad works but not the two-finger scrolling, zooming, etc. The sound and microphone do not work either while they function under Windows. Thank you for your help.
Here are some commands that may be useful for resolving my issue (I do not have a file
/etc/X11/xorg.conf):
- ubuntu-drivers devices : (currently nvidia-driver-455 - third-party free recommended is installed)
ubuntu-drivers devices
== /sys/devices/pci0000:00/0000:00:06.0/0000:01:00.0 ==
modalias : pci:v000010DEd00001C94sv00001028sd000009D9bc03sc02i00
vendor : NVIDIA Corporation
model : GP107M [GeForce MX350]
driver : nvidia-driver-440-server - distro non-free
driver : nvidia-driver-450 - distro non-free
driver : nvidia-driver-455 - third-party free recommended
driver : nvidia-driver-450-server - distro non-free
driver : xserver-xorg-video-nouveau - distro free builtin
- xrandr : (This does not seem normal)
xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 2560 x 1600, current 2560 x 1600, maximum 2560 x 1600
default connected primary 2560x1600+0+0 0mm x 0mm
2560x1600 93.00*
- lspci :
lspci
0000:00:00.0 Host bridge: Intel Corporation Device 9a14 (rev 01)
0000:00:02.0 VGA compatible controller: Intel Corporation Device 9a49 (rev 01)
0000:00:04.0 Signal processing controller: Intel Corporation Device 9a03 (rev 01)
0000:00:06.0 PCI bridge: Intel Corporation Device 9a09 (rev 01)
0000:00:07.0 PCI bridge: Intel Corporation Device 9a23 (rev 01)
0000:00:0a.0 Signal processing controller: Intel Corporation Device 9a0d (rev 01)
0000:00:0d.0 USB controller: Intel Corporation Device 9a13 (rev 01)
0000:00:0d.2 USB controller: Intel Corporation Device 9a1b (rev 01)
0000:00:0e.0 RAID bus controller: Intel Corporation Volume Management Device NVMe RAID Controller
0000:00:12.0 Serial controller: Intel Corporation Device a0fc (rev 20)
0000:00:14.0 USB controller: Intel Corporation Device a0ed (rev 20)
0000:00:14.2 RAM memory: Intel Corporation Device a0ef (rev 20)
0000:00:14.3 Network controller: Intel Corporation Device a0f0 (rev 20)
0000:00:15.0 Serial bus controller [0c80]: Intel Corporation Device a0e8 (rev 20)
0000:00:15.1 Serial bus controller [0c80]: Intel Corporation Device a0e9 (rev 20)
0000:00:16.0 Communication controller: Intel Corporation Device a0e0 (rev 20)
0000:00:1d.0 System peripheral: Intel Corporation Device 09ab
0000:00:1f.0 ISA bridge: Intel Corporation Device a082 (rev 20)
0000:00:1f.3 Multimedia audio controller: Intel Corporation Device a0c8 (rev 20)
0000:00:1f.4 SMBus: Intel Corporation Device a0a3 (rev 20)
0000:00:1f.5 Serial bus controller [0c80]: Intel Corporation Device a0a4 (rev 20)
0000:01:00.0 3D controller: NVIDIA Corporation GP107M [GeForce MX350] (rev a1)
10000:e0:1d.0 PCI bridge: Intel Corporation Device a0b0 (rev 20)
10000:e1:00.0 Non-Volatile memory controller: SK hynix Device 1339
Thank you for your help, I would be very grateful if you could assist me with this issue.
1 réponse
Hello,
Thank you for posting only one issue per discussion thread.
For your touchpad issues, I encourage you to open a new topic (e.g. "Touchpad, no multitouch"). Just a note to be brief that the application/site supports it. For example, you can test it in Google Maps with Chromium.
For your HDMI problems. Avoid PPAs; it's better to stick with standard packages.
Good luck!
Thank you for posting only one issue per discussion thread.
For your touchpad issues, I encourage you to open a new topic (e.g. "Touchpad, no multitouch"). Just a note to be brief that the application/site supports it. For example, you can test it in Google Maps with Chromium.
For your HDMI problems. Avoid PPAs; it's better to stick with standard packages.
- Let us know if you are using secure boot. If so, you need to sign your Nvidia driver; otherwise, it won't be loaded by recent kernels. For more details, see the last message in this discussion.
- Make sure you are using the latest Nvidia driver provided by the official repository for your version of Ubuntu. The only package you are supposed to install is
xserver-xorg-video-nvidia
, which will cascade install everything else, including the driver. So feel free to clean up what you have installed to start from a clean slate. After disabling your PPAs:
sudo apt purge $(dpkg -l | grep ^ii | grep nvidia)
sudo apt update
sudo apt install xserver-xorg-video-nvidia
sudo reboot
- Let us know the exact model of your card and the driver installed:
lspci | grep -i nvidia
dpkg -l | grep nvidia
- Check if the Nvidia module is active:
nvidia-smi
. - If applicable, please report the result of:
lsmod | grep nvidia
sudo modprobe nvidia
sudo dmesg | tail
- The command
xrandr
should be typed when your screen is connected to your HDMI port.
Good luck!