Stuck at low res with Kernel 5

Screen resolution, 3D Acceleration, nVidia, ATI
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Tweeny
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Stuck at low res with Kernel 5

Post by Tweeny » Fri Aug 30, 2019 4:47 pm

When I update Linux Mint to Kernel 5.0 my desktop boots into a low resolution, 640x480.
xrandr shows me that only this resolution is available while with Kernel 4.15 it shows a full list including the native resolution of my display 1920x1080.
I tried to add and change the resolution with xrandr. But it doesn't work. I only get a black screen.

My hardware:
- Monitor: Acer XB240H (144Hz)
- Graphics: AMD RX Vega 56

Many thanks in advance!

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Pjotr
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Re: Stuck at low res with Kernel 5

Post by Pjotr » Fri Aug 30, 2019 5:05 pm

Well, just stick to the 4.15 kernel series then.... It's long term supported, so there's no need at all to switch to a higher kernel series. :wink:
Tip: 10 things to do after installing Linux Mint 19.2 Tina
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Tweeny
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Re: Stuck at low res with Kernel 5

Post by Tweeny » Fri Aug 30, 2019 6:14 pm

Well, it's what I am doing now. I just hoped for a better support of the AMD RX Vega and more fps when using Kernel 5.

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Pjotr
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Re: Stuck at low res with Kernel 5

Post by Pjotr » Fri Aug 30, 2019 6:46 pm

Better support might be unlikely, but more fps might be feasible by other means. Please generate an overview of your system like this:
- Launch a terminal window (this is how to launch a terminal window);
- make the terminal window full screen, to avoid chopped lines;
- Copy/paste this command into the terminal:

Code: Select all

inxi -Fxz
(if you type: the letter F is a capital letter)

Press Enter.

Copy/paste the output in your next message.

No hurry, I'm off to bed now as it's past midnight in my timezone....
Tip: 10 things to do after installing Linux Mint 19.2 Tina
Keep your Linux Mint healthy: Avoid these 10 fatal mistakes
Twitter: twitter.com/easylinuxtips
All in all, horse sense simply makes sense.

Tweeny
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Re: Stuck at low res with Kernel 5

Post by Tweeny » Sat Aug 31, 2019 4:48 am

Thanks for taking a deeper look inside my system. Here is the output:

Code: Select all

inxi -Fxz
System:    Host: tweeny-pc Kernel: 4.15.0-58-generic x86_64 bits: 64 compiler: gcc v: 7.4.0 Desktop: Cinnamon 4.2.3 
           Distro: Linux Mint 19.2 Tina base: Ubuntu 18.04 bionic 
Machine:   Type: Desktop Mobo: ASRock model: Z170 Gaming-ITX/ac serial: <filter> UEFI [Legacy]: American Megatrends v: P7.30 
           date: 01/23/2018 
CPU:       Topology: Quad Core model: Intel Core i5-6600K bits: 64 type: MCP arch: Skylake-S rev: 3 L2 cache: 6144 KiB 
           flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 28032 
           Speed: 800 MHz min/max: 800/4200 MHz Core speeds (MHz): 1: 800 2: 800 3: 800 4: 800 
Graphics:  Device-1: Advanced Micro Devices [AMD/ATI] Vega 10 XT [Radeon RX Vega 64] vendor: Micro-Star MSI driver: amdgpu 
           v: kernel bus ID: 03:00.0 
           Display: x11 server: X.Org 1.19.6 driver: amdgpu,ati unloaded: fbdev,modesetting,radeon,vesa tty: N/A 
           OpenGL: renderer: Radeon RX Vega (VEGA10 DRM 3.23.0 4.15.0-58-generic LLVM 8.0.0) v: 4.5 Mesa 19.1.2 - padoka PPA 
           direct render: Yes 
Audio:     Device-1: Intel 100 Series/C230 Series Family HD Audio vendor: ASRock Sunrise Point-H driver: snd_hda_intel 
           v: kernel bus ID: 00:1f.3 
           Device-2: Advanced Micro Devices [AMD/ATI] driver: snd_hda_intel v: kernel bus ID: 03:00.1 
           Sound Server: ALSA v: k4.15.0-58-generic 
Network:   Device-1: Intel Ethernet I219-V vendor: ASRock driver: e1000e v: 3.2.6-k port: f000 bus ID: 00:1f.6 
           IF: enp0s31f6 state: up speed: 1000 Mbps duplex: full mac: <filter> 
           Device-2: Broadcom and subsidiaries BCM4352 802.11ac Wireless Network Adapter vendor: AzureWave driver: wl 
           v: kernel port: e000 bus ID: 06:00.0 
           IF: wlp6s0 state: down mac: <filter> 
Drives:    Local Storage: total: 447.14 GiB used: 95.53 GiB (21.4%) 
           ID-1: /dev/sda vendor: SanDisk model: SDSSDA240G size: 223.57 GiB 
           ID-2: /dev/sdb vendor: OCZ model: TRION100 size: 223.57 GiB 
Partition: ID-1: / size: 36.47 GiB used: 11.69 GiB (32.1%) fs: ext4 dev: /dev/sdb5 
           ID-2: /home size: 91.17 GiB used: 83.84 GiB (92.0%) fs: ext4 dev: /dev/sdb6 
Sensors:   System Temperatures: cpu: 47.0 C mobo: N/A gpu: amdgpu temp: 61 C 
           Fan Speeds (RPM): N/A gpu: amdgpu fan: 70 
Info:      Processes: 244 Uptime: 27m Memory: 15.61 GiB used: 1.70 GiB (10.9%) Init: systemd runlevel: 5 Compilers: gcc: 7.4.0 
           Shell: bash v: 4.4.20 inxi: 3.0.32 


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Pjotr
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Re: Stuck at low res with Kernel 5

Post by Pjotr » Sat Aug 31, 2019 4:52 am

Couple of things:

1. Your /home is much too full. A Linux partition should never be filled over 75 - 80 %, in order to prevent file fragmentation and thus speed loss:
https://easylinuxtipsproject.blogspot.c ... 1.html#ID4
(item 4)

2. Apply these safe speed tweaks:
https://easylinuxtipsproject.blogspot.c ... -mint.html
Tip: 10 things to do after installing Linux Mint 19.2 Tina
Keep your Linux Mint healthy: Avoid these 10 fatal mistakes
Twitter: twitter.com/easylinuxtips
All in all, horse sense simply makes sense.

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