[SOLVED] Can't get native resolution on ultrawide monitor
by montagdude from LinuxQuestions.org on (#6NW2A)
We got these new monitors at work, and I decided it was finally time to upgrade my old one at home too. This is the monitor:
https://www.bhphotovideo.com/c/produ...cd_taa_4k.html
The monitor works fine at work (we have Red Hat 8 with GNOME), but my Slackware box won't let me set a resolution higher than 1920x1080. I tried the following:
Code:> cvt 3440 1440
# 3440x1440 59.94 Hz (CVT) hsync: 89.48 kHz; pclk: 419.50 MHz
Modeline "3440x1440_60.00" 419.50 3440 3696 4064 4688 1440 1443 1453 1493 -hsync +vsync
> xrandr --newmode "3440x1440_60.00" 419.50 3440 3696 4064 4688 1440 1443 1453 1493 -hsync +vsync
> xrandr --addmode HDMI-1 "3440x1440_60.00"
> xrandr --output HDMI-1 --mode "3440x1440_60.00"This fails with the error:
Code:xrandr: Configure crtc 1 failedThe laptop is a Dell Latitude E6540 with hybrid graphics, but normally I just use the integrated Intel HD Graphics 4600. I'm not actually sure how to make the entire display use the dedicated graphics card but would be willing to try if someone knows how.
Code:> lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Mars XTX [Radeon HD 8790M]I am connecting the monitor via HDMI. It does have a DisplayPort input, but my laptop only has an HDMI output. I'm hoping this laptop isn't just too old to support this monitor. According to the monitor documentation, 3440x1440 should be achievable with HDMI.
https://www.bhphotovideo.com/c/produ...cd_taa_4k.html
The monitor works fine at work (we have Red Hat 8 with GNOME), but my Slackware box won't let me set a resolution higher than 1920x1080. I tried the following:
Code:> cvt 3440 1440
# 3440x1440 59.94 Hz (CVT) hsync: 89.48 kHz; pclk: 419.50 MHz
Modeline "3440x1440_60.00" 419.50 3440 3696 4064 4688 1440 1443 1453 1493 -hsync +vsync
> xrandr --newmode "3440x1440_60.00" 419.50 3440 3696 4064 4688 1440 1443 1453 1493 -hsync +vsync
> xrandr --addmode HDMI-1 "3440x1440_60.00"
> xrandr --output HDMI-1 --mode "3440x1440_60.00"This fails with the error:
Code:xrandr: Configure crtc 1 failedThe laptop is a Dell Latitude E6540 with hybrid graphics, but normally I just use the integrated Intel HD Graphics 4600. I'm not actually sure how to make the entire display use the dedicated graphics card but would be willing to try if someone knows how.
Code:> lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Mars XTX [Radeon HD 8790M]I am connecting the monitor via HDMI. It does have a DisplayPort input, but my laptop only has an HDMI output. I'm hoping this laptop isn't just too old to support this monitor. According to the monitor documentation, 3440x1440 should be achievable with HDMI.