I have bought a new Monitor ( iiyama ProLite XUB3493WQSU-B1), which has a resolution of 3440x1440 but in my settings the maximal resolution i can choose is 2560x1440. xrandr says the following :
HDMI-1 connected 2560x1440+0+0 (normal left inverted right x axis y axis) 800mm x 345mm
@vits95
I don’t think that’s the reason. I have an Lenovo notebook and it’s the only Monitor connected to it @tachi
The only config file in that directory is for my keyboard
If you have only an iGPU (integrated GPU by Intel) it could be still your graphics card. What are the hardware specifications of your Lenovo? Specifically, CPU and GPU?
Notebook: Lenovo v320 17ikb
CPU: Intel® Core™ i5-8250U
GPU: Intel® UHD-Graphics 620
→ Max Resolution (HDMI 1.4): 4096x2304@24Hz
the monitor is connected to the HDMI Port
I asked the Lenovo Support for the supported HDMI specifications and wait for the answer.
i used the cable that was delivered with the monitor and a High Speed HDMI Cable with Ethernet
testing it with a live Image showed the same result (resolution of 2560x1440)
It looks like that HDMI 1.4 does not have native support for your desired resolution.
You could check if the system detects native resolution support for your monitor at startup. If so, you could add it to an xorg.conf file in /etc/X11/xorg.conf.d/ and see if that works.
I believe you can check the contents of /var/log/Xorg.0.log and similar files to see what the system detects. The number is the number of your screen.
You’re right it doesn’t detect the the native resolution. But I also noticed that it detects only resolutions for a 16:9 screen and not for a 21:9 as I need it. Getting a smaller resolution but one that fits the monitors side to side ratio would help me a lot.
Edit: It`s now working with a resolution of 2560x1080. I added a profile to xrandr via terminal. How do i add it to the xorg.conf file?
Are these the only lines starting with modeset(0) ?
Are there other lines with timings?
If the log is too long to post here you could use https://paste.centos.org/ and share the link.
These lines are important for you. You could use xrandr to add a profile and check if it works.
[ 25.106] (II) modeset(0): Supported detailed timing:
[ 25.106] (II) modeset(0): clock: 438.5 MHz Image Size: 800 x 345 mm
[ 25.106] (II) modeset(0): h_active: 3440 h_sync: 3584 h_sync_end 3680 h_blank_end 3880 h_border: 0
[ 25.106] (II) modeset(0): v_active: 1440 v_sync: 1478 v_sync_end 1482 v_blanking: 1506 v_border: 0
[ 25.106] (II) modeset(0): Serial No: 1171401500024
[ 25.106] (II) modeset(0): Ranges: V min: 48 V max: 76 Hz, H min: 15 H max: 114 kHz, PixClock max 605 MHz
[ 25.106] (II) modeset(0): Monitor name: PL3493WQ
[ 25.106] (II) modeset(0): Supported detailed timing:
[ 25.106] (II) modeset(0): clock: 319.8 MHz Image Size: 800 x 345 mm
[ 25.106] (II) modeset(0): h_active: 3440 h_sync: 3488 h_sync_end 3520 h_blank_end 3600 h_border: 0
[ 25.106] (II) modeset(0): v_active: 1440 v_sync: 1443 v_sync_end 1453 v_blanking: 1481 v_border: 0
Bare with me. This is something I have not done often. Little mistakes and/or omissions could slip in my example for your xorg.conf file.
Above would result in something like below and could be added to the Monitor section of a xorg.conf file. Unfortunately, I would not know what hsync and vsync should be. That could be derived from the EDID (in hex) information.
Example for a file name: /etc/X11/xorg.conf.d/31-monitor.conf
i use cvt to generate the Modeline. For a resolution of 3440x1440 and 30 Hy it works. but when i use your example for the config file my notebook won`t start. It boots up to the point where the lenovo logo appears and then it stays there. is this because of the differetn Identifier in the Screen and monitor sections?
If the previous setup example did not work (no video output) you could check what went wrong during that boot with option -b -1. If you want to go back further, increase the negative number. sudo journalctl -b -1 https://www.freedesktop.org/software/systemd/man/journalctl.html
it stopped booting like before with both monitors showing the same image and I had to remove the file to get it working. I uploaded the journalctl output to the pastbin: https://paste.centos.org/view/7c4718b3 To me it seems like Xorg has a problem with the chosen Modline but i can`t really get the reason for it