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Hello,
I've been searching for solutions to my problem for months, but I've not been able to find a simple solution (simple meaning minimal and low-level, not necessarily easy). I'm trying to avoid the X-Y problem, so I'll phrase this as a bastardized user story. I don't mean to sound entitled.
My laptop has a 4K display, but the built-in graphics processor has a hard time keeping up with it. Animations are slow, buggy and really put a damper on productivity. Lowering resolution (in Linux and Windows) seems to be the only solution to the problem. Although I can easily change my desktop environment's resolution setting to 1080p, I want to force my system to use that same resolution across TTY, display manager, and desktop environment.
In my perfect world, I would execute one command or edit one config file so that every aspect of my system would display in 1080p.
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Well, you start your bootloader, which sets a resolution to display the boot options (I am assuming grub). Grub starts your kernel with drivers, so your kernel detects a suitable resolution for your TTYs. Then you start a program that provides a graphical user interface, which also sets a resolution based on what it thinks it is right.
You won't change all these resolutions with one command, so your perfect world does not exist.
https://www.unixtutorial.org/how-to-cha … ootloader/
https://linuxhint.com/set_screen_resolu … rnel_boot/
https://wiki.ubuntu.com/X/Config/Resolution
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Well, you start your bootloader, which sets a resolution to display the boot options (I am assuming grub). Grub starts your kernel with drivers, so your kernel detects a suitable resolution for your TTYs. Then you start a program that provides a graphical user interface, which also sets a resolution based on what it thinks it is right.
You won't change all these resolutions with one command, so your perfect world does not exist.
https://www.unixtutorial.org/how-to-cha … ootloader/
https://linuxhint.com/set_screen_resolu … rnel_boot/
https://wiki.ubuntu.com/X/Config/Resolution
I figured as much. That's how I've been getting by through now. Unfortunately, GRUB (or I guess the kernel?) does not consider 1080p to be a supported resolution on my display; it doesn't show up in the list after typing "videoinfo" in the GRUB command line. Do you believe a different bootloader may behave better or is this definitely a kernel-level modesetting issue?
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Do you believe a different bootloader may behave better
This part of the boot process tend to be hardware dependent so it doesn't matter which bootloader you use. Kernel modesetting will probably have no effect yet (since no kernel is loaded yet - you are just about to boot one).
You can have a look at your BIOS if there's a switch to kick off the graphics early usually it is Fast Boot or Ultra-Fast Boot. But there is no guarantee it will work since it's firmware dependent.
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You could use legacy boot and boot with an MBR bootloader - in 640x480. That being said, I wonder why you are having such issues with a 4k resolution on something so recent that it has a 4k screen attached to it. What card/driver do you use?
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You could use legacy boot and boot with an MBR bootloader - in 640x480. That being said, I wonder why you are having such issues with a 4k resolution on something so recent that it has a 4k screen attached to it. What card/driver do you use?
I don't believe there is any driver that will work better. I had the same issues with Windows 10. The official drivers on Windows didn't offer any relief in 4K and they don't offer relief on Arch/Manjaro/Ubuntu. I'm using an Intel i7-8550U @ 1.80 GHz. This is pretty standard for laptops in this range, but I usually see this processor in laptops with 1080p displays. It was manufactured in 2017 when 4K in mid-high range laptops was a huge fad. I also have an Nvidia GeForce 940MX which also doesn't like 4K and I'd rather not use the dedicated GPU for normal computing.
Last edited by loganw (2020-08-19 00:35:58)
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What CPU governor are you using? I vaguely remember horrible GPU performance on a Dell XPS 15 (5 years ago) on Windows whenever the CPU was set to powersave. It may be far fetched, but can you try setting performance governor and check if it is improved?
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