2560x1440 60Hz not working

[q1980]

Hi,
I saw similar issues on this forum and tried but nothing working in my case.

I have connected 2560x1440x60 capable monitor via hdmi to laptop dell 5511 with intel graphics, but after choosing this resolution in 'display dialog' monitor's displaying 'loosing signal message', but system thinks the desktop is displayed because I can move cursor on this monitor, however screen is empty.

Lower resolutions works for eg. 2048x1280 (what is weird I don't see this mode in supported modes )

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inxi -Fxxxrz

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System:
  Kernel: 5.4.0-84-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 
  Desktop: Cinnamon 5.0.5 wm: muffin 5.0.1 dm: LightDM 1.30.0 
  Distro: Linux Mint 20.2 Uma base: Ubuntu 20.04 focal 
Machine:
  Type: Laptop System: Dell product: Latitude 5511 v: N/A serial: <filter> 
  Chassis: type: 10 serial: <filter> 
  Mobo: Dell model: 0C33CM v: A00 serial: <filter> UEFI: Dell v: 1.7.1 
  date: 07/27/2021 
Battery:
  ID-1: BAT0 charge: 68.3 Wh condition: 68.3/68.0 Wh (100%) volts: 16.0/15.2 
  model: BYD DELL 3PCVM0C type: Li-poly serial: <filter> status: Full 
  Device-1: hid-dc:2c:26:fd:20:5f-battery model: Keychron K1 serial: N/A 
  charge: N/A status: Discharging 
CPU:
  Topology: 6-Core model: Intel Core i7-10850H bits: 64 type: MT MCP 
  arch: N/A L2 cache: 12.0 MiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx 
  bogomips: 64797 
  Speed: 2700 MHz min/max: N/A Core speeds (MHz): 1: 2700 2: 2700 3: 2700 
  4: 2700 5: 2700 6: 2700 7: 2700 8: 2700 9: 2700 10: 2700 11: 2700 12: 2700 
Graphics:
  Device-1: Intel UHD Graphics vendor: Dell driver: i915 v: kernel 
  bus ID: 00:02.0 chip ID: 8086:9bc4 
  Display: x11 server: X.Org 1.20.11 driver: modesetting 
  unloaded: fbdev,vesa resolution: 1920x1080~60Hz, 2048x1280~60Hz 
  OpenGL: renderer: Mesa Intel UHD Graphics (CML GT2) v: 4.6 Mesa 21.0.3 
  direct render: Yes 
Audio:
  Device-1: Intel Comet Lake PCH cAVS vendor: Dell driver: snd_hda_intel 
  v: kernel bus ID: 00:1f.3 chip ID: 8086:06c8 
  Sound Server: ALSA v: k5.4.0-84-generic 
Network:
  Device-1: Intel Wi-Fi 6 AX201 driver: iwlwifi v: kernel port: 3000 
  bus ID: 00:14.3 chip ID: 8086:06f0 
  IF: wlo1 state: up mac: <filter> 
  Device-2: Intel Ethernet I219-LM vendor: Dell driver: e1000e v: 3.2.6-k 
  port: efa0 bus ID: 00:1f.6 chip ID: 8086:0d4c 
  IF: eno2 state: down mac: <filter> 
  IF-ID-1: docker0 state: down mac: <filter> 
  IF-ID-2: tun1 state: up speed: 10 Mbps duplex: full mac: N/A 
Drives:
  Local Storage: total: 484.40 GiB used: 178.59 GiB (36.9%) 
  ID-1: /dev/nvme0n1 vendor: SK Hynix model: PC711 NVMe 512GB 
  size: 476.94 GiB speed: 31.6 Gb/s lanes: 4 serial: <filter> rev: 41001131 
  scheme: GPT 
  ID-2: /dev/sda type: USB vendor: Patriot model: N/A size: 7.46 GiB 
  serial: <filter> rev: PMAP scheme: GPT 
Partition:
  ID-1: / size: 143.18 GiB used: 36.15 GiB (25.2%) fs: ext4 
  dev: /dev/nvme0n1p2 
  ID-2: /home size: 231.07 GiB used: 64.96 GiB (28.1%) fs: ext4 
  dev: /dev/nvme0n1p5 
  ID-3: swap-1 size: 32.00 GiB used: 0 KiB (0.0%) fs: swap 
  dev: /dev/nvme0n1p4 
Sensors:
  System Temperatures: cpu: 69.0 C mobo: N/A 
  Fan Speeds (RPM): cpu: 2702 
Repos:
  No active apt repos in: /etc/apt/sources.list 
  Active apt repos in: /etc/apt/sources.list.d/docker.list 
  1: deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu focal stable
  Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list 
  1: deb http://packages.linuxmint.com uma main upstream import backport #id:linuxmint_main
  2: deb http://archive.ubuntu.com/ubuntu focal main restricted universe multiverse
  3: deb http://archive.ubuntu.com/ubuntu focal-updates main restricted universe multiverse
  4: deb http://archive.ubuntu.com/ubuntu focal-backports main restricted universe multiverse
  5: deb http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
  6: deb http://archive.canonical.com/ubuntu/ focal partner
Info:
  Processes: 425 Uptime: 3h 13m Memory: 30.98 GiB used: 6.96 GiB (22.5%) 
  Init: systemd v: 245 runlevel: 5 Compilers: gcc: 9.3.0 alt: 9 Shell: bash 
  v: 5.0.17 running in: gnome-terminal inxi: 3.0.38

What I tried so far:
1. Updated laptop's bios.
2. Checked monitor's supported modes:

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sudo get-edid -b 10 | parse-edid

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Section "Monitor"
	Identifier "PL2792Q"
	ModelName "PL2792Q"
	VendorName "IVM"
	# Monitor Manufactured week 25 of 2020
	# EDID version 1.3
	# Digital Display
	DisplaySize 600 340
	Gamma 2.20
	Option "DPMS" "true"
	Horizsync 30-89
	VertRefresh 50-76
	# Maximum pixel clock is 270MHz
	#Not giving standard mode: 1440x900, 60Hz
	#Not giving standard mode: 1600x900, 60Hz
	#Not giving standard mode: 1600x1200, 60Hz
	#Not giving standard mode: 1680x1050, 60Hz
	#Not giving standard mode: 1920x1080, 60Hz
	#Not giving standard mode: 1920x1200, 60Hz
	#Not giving standard mode: 2048x1280, 60Hz

	#Extension block found. Parsing...
	Modeline 	"Mode 16" 148.50 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync 
	Modeline 	"Mode 0" 241.50 2560 2608 2640 2720 1440 1443 1448 1481 +hsync -vsync 
	Modeline 	"Mode 1" 148.500 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync
	Modeline 	"Mode 2" 74.250 1920 2008 2052 2200 1080 1082 1087 1125 +hsync +vsync interlace
	Modeline 	"Mode 3" 74.250 1280 1390 1420 1650 720 725 730 750 +hsync +vsync
	Modeline 	"Mode 4" 27.027 720 736 798 858 480 489 495 525 -hsync -vsync
	Modeline 	"Mode 5" 27.027 720 736 798 858 480 489 495 525 -hsync -vsync
	Modeline 	"Mode 6" 25.200 640 656 752 800 480 490 492 525 -hsync -vsync
	Modeline 	"Mode 7" 27.000 720 732 796 864 576 581 586 625 -hsync -vsync
	Modeline 	"Mode 8" 27.000 720 732 796 864 576 581 586 625 -hsync -vsync
	Modeline 	"Mode 9" 74.250 1280 1720 1760 1980 720 725 730 750 +hsync +vsync
	Modeline 	"Mode 10" 74.250 1920 2448 2492 2640 1080 1082 1089 1125 +hsync +vsync interlace
	Modeline 	"Mode 11" 27.027 1440 1478 1602 1716 480 484 487 525 -hsync -vsync interlace
	Modeline 	"Mode 12" 27.027 1440 1478 1602 1716 480 484 487 525 -hsync -vsync interlace
	Modeline 	"Mode 13" 27.000 1440 1464 1590 1728 576 578 581 625 -hsync -vsync interlace
	Modeline 	"Mode 14" 27.000 1440 1464 1590 1728 576 578 581 625 -hsync -vsync interlace
	Modeline 	"Mode 15" 148.500 1920 2448 2492 2640 1080 1084 1089 1125 +hsync +vsync
	Modeline 	"Mode 17" 74.25 1920 2008 2052 2200 540 542 547 562 +hsync +vsync interlace
	Modeline 	"Mode 18" 74.25 1280 1390 1430 1650 720 725 730 750 +hsync +vsync 
	Modeline 	"Mode 19" 27.00 720 736 798 858 480 489 495 525 -hsync -vsync 
	Option "PreferredMode" "Mode 16"
EndSection

And used on from available options

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xrandr --newmode "2560x1440_60.00" 241.50 2560 2608 2640 2720 1440 1443 1448 1481 +hsync -vsync

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xrandr --addmode DP-3 "2560x1440_60.00"

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xrandr --output DP-3 --mode "2560x1440_60.00"

For some people those helped but not for me, do you know why?

[AndyMH]

Are you saying that setting the mode with xrandr manually does not work?

[q1980]

Yes,
What is more I'm pretty sure this monitor worked with other dell laptop out-of-the-box (some older model, with linux mint 19 also with this hdmi, but unfortunately I can't check this because I don't have this laptop and I don't what mode was used, but resolution was correct there).

[AndyMH]

I can't see anything wrong with your xrandr commands, post the output from xrandr with the monitor connected - to confirm that it is DP-3.

[q1980]

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xrandr

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Screen 0: minimum 320 x 200, current 2048 x 1280, maximum 16384 x 16384
eDP-1 connected (normal left inverted right x axis y axis)
   1920x1080     60.00 +  59.97    59.96    59.93    47.99  
   1680x1050     59.95    59.88  
   1600x1024     60.17  
   1400x1050     59.98  
   1600x900      59.99    59.94    59.95    59.82  
   1280x1024     60.02  
   1440x900      59.89  
   1400x900      59.96    59.88  
   1280x960      60.00  
   1440x810      60.00    59.97  
   1368x768      59.88    59.85  
   1360x768      59.80    59.96  
   1280x800      59.99    59.97    59.81    59.91  
   1152x864      60.00  
   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  
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
HDMI-2 disconnected (normal left inverted right x axis y axis)
DP-3 connected primary 2048x1280+0+0 (normal left inverted right x axis y axis) 597mm x 336mm
   2560x1440     59.95 +
   2048x1280     59.99* 
   1920x1200     59.95  
   1920x1080     60.00    50.00    59.94  
   1920x1080i    60.00    50.00    59.94  
   1600x1200     60.00  
   1680x1050     59.88  
   1600x900      60.00  
   1280x1024     75.02  
   1440x900      59.90  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94 

[AndyMH]

I'm stumped, you've done all the right things, the monitor is on DP-3 and is showing 2560x1440 resolution in the xrandr output .

The only other thing I can suggest is check the specs for the laptop - what is the max resolution supported via displayport? Don't think this will help, my venerable thinkpad T430s can handle 2560x1600 via DP.

Are you connecting via a usb C port, can you connect via the mini displayport or HDMI port?

[q1980]

Dell has hdmi 2.0 what I use (and it's quite new model). Also monitor looks ok, because I connected to this device xbox (few months ago) and this resolution worked nicely on this cable.

I don't have usbc<>displayport cable to check this kind connnection (I have minidisplay<>displayport cable, but this is not compatible with usbc).

[SMG]

I have connected 2560x1440x60 capable monitor via hdmi to laptop dell 5511 with intel graphics

The Intel i915 graphics driver loads from the kernel. Your info indicates you are using the 5.4 kernel on a 10th-gen Intel cpu. I suggest trying a newer kernel which would have an updated i915 driver.

The 5.11 kernel is available in Update Manager. Open Update Manager. Select View > Linux Kernels and click Continue. Make sure 5.11 is selected on the left panel and then click the top-most option on the right panel. An "Install" button will appear. Install the kernel and then reboot for it to become active.

Let us know if that helps.

[q1980]

I tried 5.11 few days ago, but maybe they updated something. I see there's also update for 5.4. I will try.

How to easily switch back to 5.4 after upgrade?
On booting on grub I chose last time the older kernel and later went to settings as you described and removed newer kernel - is other simpler better method?

[SMG]

How to easily switch back to 5.4 after upgrade?
On booting on grub I chose last time the older kernel and later went to settings as you described and removed newer kernel - is other simpler better method?

That is the correct way to switch back.

Mint will automatically boot to the highest number kernel, so if the highest number is not the one you want to use, you would follow the instructions you have to boot to the lower number (older) kernel.

[SMG]

If the kernel does not help, the only other place I can think to check of what might be happening is the Xorg log output. Sometimes messages (which would not necessarily show as errors) would be in that file.

Use this command in a terminal to upload the X Server log file to termbin if you would like us to check it.
cat /var/log/Xorg.0.log | nc termbin.com 9999
It will return with a url address that you should post in your next reply.

[pns]

I had a similar problem with my XPS 7590. Display port (via TB) works fine but HDMI is very finicky. I was able once or twice to get it to display but more often than not I either get incorrect resolutions (usually fixed by deleting ~/.config/cinnamon-monitors.xml) or the monitor alternates between completely black and saying no signal (even though from xrandr's perspective the monitor is active and connected).

1920x1080 always works via HDMI. But 2560x1440p@60 I only got it to work once or twice but 99% of the time it doesn't work.

In the end the only way I was able to get it to work with HDMI for 2560x1440p reliably was to lower the refresh rate using the following:

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xrandr --newmode 2560x1440_56 225.585 2560 2608 2640 2720 1440 1443 1448 1481 +hsync -vsync
xrandr --addmode DP-3 2560x1440_56
xrandr --output DP-3 --mode 2560x1440_56 --pos 0x0

which results in a 56Hz refresh rate. Any higher than that doesn't work.

[Menard]

If you can, try with DVI, for me it works fine in 1920x1080 and not if I use HDMI

[ThaCrip]

1920x1080 always works via HDMI. But 2560x1440p@60 I only got it to work once or twice but 99% of the time it doesn't work.

In the end the only way I was able to get it to work with HDMI for 2560x1440p reliably was to lower the refresh rate using the following:

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xrandr --newmode 2560x1440_49 225.585 2560 2608 2640 2720 1440 1443 1448 1481 +hsync -vsync
xrandr --addmode DP-3 2560x1440_49
xrandr --output DP-3 --mode 2560x1440_49 --pos 0x0

which results in a 56Hz refresh rate. Any higher than that doesn't work.

I am no expert, but could it be a so-so HDMI cable causing the issue for you? ; because it's odd lowering it 4Hz (from 60Hz to 56Hz) actually fixed it.

because from what I can tell 1440p should work at 60Hz I would imagine since it appears one site I was reading a moment ago (i.e. https://viotek.com/wp-content/uploads/H ... 24x536.png ) claims...

-HDMI v1.4 cable... 1440p @ 85Hz MAX
-HDMI v2.0 cable... 1440p @ 144Hz MAX

so your still a bit within the safety margin at 60Hz assuming you got a lower rated HDMI cable. but at the same time I am not sure how picky HDMI cables are in regards to all of this 'higher performance' stuff, if it's mostly just marketing junk, or if it's quite accurate(?). so 'maybe' your HDMI cable just happens to be a 'little' worse than usual and could account for you needing to lower Hz to make it work reliably(?). but I am just taking a guess here as it would be interesting to see what happens if you use a different HDMI cable on your same setup just to see if 1440p @ 60Hz works.

p.s. still, thanks for the info as that could be potentially beneficial for others.

If you can, try with DVI, for me it works fine in 1920x1080 and not if I use HDMI

Unless someone has a older monitor I suspect DVI might not be a real option.

on a side note... I was briefly using a DVI to HDMI adapter (i.e. this one... https://www.officedepot.com/a/products/ ... ter-Black/ ) so that the adapter was plugged into my GPU's DVI port which then converted it to HDMI and then I just used a old 6' Belkin HDMI cable I had laying around for quite a few years now to connect from the GPU to Monitor's HDMI port and, at least on Mint, I could partially get 144Hz to work but had a issue (it seems to work when I set it to 144Hz but after computer sits overnight with monitor off etc, then I power on screen to use it again, the only way to re-engage the screen is for me to press CTRL+ALT+F2, which then engages the screen but I am at a prompt, and then press CTRL+ALT+F7, which brings me back to the normal Mint screen and it's working again like usual. but I gotta do this each day at 144Hz (as I leave my PC on all of the time)), where as when I dropped back to 120Hz it worked as expected without the issue as I no longer have to do that CTRL+ALT+F2 and CTRL+ALT+F7 stuff. but I switched to DisplayPort cable (supposedly they are DP v1.4 cables (my monitor itself is only DP v1.2 spec anyways) as I got two dirt cheap on Ebay and work fine at 1080p @ 144Hz (they might work on higher res/Hz but I have nothing to test them on to say for sure) and I can use 144Hz without issue now.

but looking around online it appears dual-link DVI can do a MAX of 1080p @ 120/144Hz, which seems to be the MAX for the DVI spec (assuming the best one). single-link DVI seems to be 1080p @ 60Hz MAX.

[Menard]

Thanks, ctrl+alt+f2 works for me and ctrl+alt+f7 too ... i'll try it when my monitor is blocked on the TV

[ThaCrip]

Thanks, ctrl+alt+f2 works for me and ctrl+alt+f7 too ... i'll try it when my monitor is blocked on the TV

You had a issue that it (CTRL+ALT+F2 and then CTRL+ALT+F7) helped temporarily fix too?

[Menard]

You had a issue that it (CTRL+ALT+F2 and then CTRL+ALT+F7) helped temporarily fix too?

No, because when it happened, I had not the TV on ... I rarely use the TV anyway and anyway the black screens don't last long enough to use these keyboard shortcuts ... and now it seems to have stop to happen, especially with my new cable

[pns]

I am no expert, but could it be a so-so HDMI cable causing the issue for you? ; because it's odd lowering it 4Hz (from 60Hz to 56Hz) actually fixed it.

because from what I can tell 1440p should work at 60Hz I would imagine since it appears one site I was reading a moment ago (i.e. https://viotek.com/wp-content/uploads/H ... 24x536.png ) claims...

-HDMI v1.4 cable... 1440p @ 85Hz MAX
-HDMI v2.0 cable... 1440p @ 144Hz MAX

so your still a bit within the safety margin at 60Hz assuming you got a lower rated HDMI cable. but at the same time I am not sure how picky HDMI cables are in regards to all of this 'higher performance' stuff, if it's mostly just marketing junk, or if it's quite accurate(?). so 'maybe' your HDMI cable just happens to be a 'little' worse than usual and could account for you needing to lower Hz to make it work reliably(?). but I am just taking a guess here as it would be interesting to see what happens if you use a different HDMI cable on your same setup just to see if 1440p @ 60Hz works.

p.s. still, thanks for the info as that could be potentially beneficial for others.

I'm pretty sure it's not the HDMI cable, I have a cable I use for my TV (2560p @ 60Hz) and it makes no difference. Same thing happens. As you mentioned any 1.4/2.0 cable is able to easily do 1440p@60Hz. I have tried connecting the laptop to the TV to test it and it works fine (so laptop can definitely drive 1440p@60Hz via HDMI). DisplayPort also works fine with the monitor at 1440p@60Hz.

It all points to being an issue with the monitor itself, specifically with it's HDMI input. Even though the specs say the HDMI port supports 1440p@60Hz ¯\_(ツ)_/¯

Anyway just wanted to put out a possible solution that worked in my case.

[AndyMH]

What is the monitor make and model?

[pns]

What is the monitor make and model?

BenQ GW2765HT