Dell 7773 NVIDIA MX150 3840x2160 Resolution Missing

Screen resolution, 3D Acceleration, nVidia, ATI
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shawnlam
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Re: Dell 7773 NVIDIA MX150 3840x2160 Resolution Missing

Post by shawnlam » Sat Jun 23, 2018 9:04 pm

Switching to the Intel GPU did not eliminate the strange display issues (random large black boxes or window outlines), but restarting Cinnamon seems to solve it, at least temporarily. I have added the statement "nohup cinnamon --replace > /dev/null 2>&1 &" to the startup script, which works quite well. I did not have to add the "sleep 1" statement, but I will keep it in mind if I have occasional issues. I will be watching to see if those display artifacts reappear. If they do, I will see if they are recordable via screen recording. If not, I will get a camera recording.

I have tried many combinations of the settings for the 4k television to eliminate the problem, and none seem to improve the issue, even slightly. Because restarting Cinnamon seems to provide at least a temporary resolution, I am not convinced that the TV was the problem, but I am glad to continue testing. I think I will temporarily disable the restarting of Cinnamon and run through a methodical test of all of the TV settings to see if any combination makes a difference. I will keep you updated on this.

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roblm
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Re: Dell 7773 NVIDIA MX150 3840x2160 Resolution Missing

Post by roblm » Sat Jun 23, 2018 9:19 pm

Go to System Settings > General and try setting Disable compositing for full-screen windows to ON and go to Effects and turn OFF all effects.

shawnlam
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Re: Dell 7773 NVIDIA MX150 3840x2160 Resolution Missing

Post by shawnlam » Sat Jun 23, 2018 11:20 pm

It took a couple of hours, but I believe I have run through every combination of TV display settings of which I could conceive. Including high, medium, and low black detail, reduce judder, auto brightness control, game mode, computer mode, calibrated, calibrated dark, vivid, color temperatures, game low latency, film mode, gamma, color space, and variations on the backlight, brightness, contrast, color, tint, sharpness, and anything else I could find. When nothing made a difference, I performed a "Reset TV to Factory Defaults," which means I lost my color calibration (took forever to set up). That's not a big deal.

What is a big deal is that I was able to get screenshots showing a few of the screen issues. That leads me to believe that the issues are more GPU/Cinnamon related. Perhaps they are driver specific.

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roblm
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Re: Dell 7773 NVIDIA MX150 3840x2160 Resolution Missing

Post by roblm » Fri Jun 29, 2018 7:27 am

shawnlam wrote:
Sat Jun 23, 2018 11:20 pm
What is a big deal is that I was able to get screenshots showing a few of the screen issues. That leads me to believe that the issues are more GPU/Cinnamon related. Perhaps they are driver specific.
This info is a little late because I forgot to post it sooner.

You can download Mint 19 MATE beta or Xfce beta and after installing to a DVD/USB, run a live session to test the monitor. Both of those Mint editions have 6 other choices for a Window Manager, under Desktop Settings > Windows. Cinnamon does not support using a different Window Manager.

You can wait a little longer for the release of the Mint 19 final versions, which xenopeek says should start at the end of this week:
viewtopic.php?f=46&t=271819&sid=7ea57f4 ... d3045eac13

shawnlam
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Re: Dell 7773 NVIDIA MX150 3840x2160 Resolution Missing

Post by shawnlam » Mon Jul 16, 2018 11:41 am

roblm,

After running for more than 3 weeks, I am very pleased with the results. Thanks for all of your help.

Here is a summary of my configuration:

I have a file in /home/username that I named .enable4k. That file contains:

Code: Select all

xrandr --newmode "3840x2160_30.00"  297.00  3840 4016 4104 4400  2160 2168 2178 2250  +HSync +VSync
xrandr --addmode HDMI-1 3840x2160_30.00
xrandr --output HDMI-1 --mode 3840x2160_30.00
sleep 1
nohup cinnamon --replace > /dev/null 2>&1 &
In Startup Applications, I have placed an entry named "Enable 4k" that executes the command:

Code: Select all

sh /home/username/.enable4k
I have a 2 second startup delay.

When I log in, the display initially shows 1920x1080, but within 2 seconds, it changes to 3840x2160. It does interrupt the login sound, but I don't want to increase the delay. I might simply eliminate the login sound. The display looks excellent, and there is no screen tearing, ghosting, or any other issue.

Thanks, again, roblm. Your assistance is greatly appreciated.

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