** Description changed:

  I installed:
  " linux-lowlatency " which installed kernel 5.4
  
  Then I installed
  linux-lowlatency-hwe-20.04
  linux-lowlatency-hwe-20.04-edge
  which installed kernel 5.8
  
  Questions:
  
  1. Is any documentation for what it is "hwe" and "edge" from
  "linux-lowlatency-hwe-20.04-edge" ?
  
  2. I use Linux Mint 20.1 and kernel lowlatency sometimes nvidia driver
  not working. More often does not work.
  
  I've compared Xorg.0.log with Meld and
  with low latency is missing line for example:
  -------------------------
  [    13.804] (II) xfree86: Adding drm device (/dev/dri/card0)
  [    13.806] (**) OutputClass "nvidia" ModulePath extended to 
"/usr/lib/x86_64-linux-gnu/nvidia/xorg,/usr/lib/xorg/modules"
  -------------------------
  
  Then with lowlatency kernel I have
  --------------
  [    13.187] (EE) [drm] Failed to open DRM device for pci:0000:01:00.0: -19
  ...
  [    13.188] (EE) Screen 0 deleted because of no matching config section.
  --------------
  
  -------------------------------------------------------------------
  $ apt policy linux-lowlatency-hwe-20.04
  linux-lowlatency-hwe-20.04:
-   Installed: 5.8.0.44.50~20.04.30
-   Candidate:   5.8.0.44.50~20.04.30
-   Version table:
-  *** 5.8.0.44.50~20.04.30 500
-         500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
-         500 http://security.ubuntu.com/ubuntu focal-security/main amd64 
Packages
-         100 /var/lib/dpkg/status
-      5.4.0.26.32 500
-         500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
+   Installed: 5.8.0.44.50~20.04.30
+   Candidate:   5.8.0.44.50~20.04.30
+   Version table:
+  *** 5.8.0.44.50~20.04.30 500
+         500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
+         500 http://security.ubuntu.com/ubuntu focal-security/main amd64 
Packages
+         100 /var/lib/dpkg/status
+      5.4.0.26.32 500
+         500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
  -------------------------------------------------------------------
+ -------------------------------------------------------------------
+ $ inxi -Fxxxrz
+ System:
+   Kernel: 5.8.0-44-generic x86_64 bits: 64 compiler: N/A 
+   Desktop: MATE 1.24.0 info: mate-panel wm: marco 1.24.0 dm: LightDM 1.30.0 
+   Distro: Linux Mint 20.1 Ulyssa base: Ubuntu 20.04 focal 
+ Machine:
+   Type: Desktop Mobo: MSI model: B150M PRO-VDH (MS-7982) v: 1.0 
+   serial: <filter> UEFI [Legacy]: American Megatrends v: 3.H0 
+   date: 07/10/2018 
+ CPU:
+   Topology: Quad Core model: Intel Core i5-6400 bits: 64 type: MCP 
+   arch: Skylake-S rev: 3 L2 cache: 6144 KiB 
+   flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx 
+   bogomips: 21599 
+   Speed: 1539 MHz min/max: 800/3300 MHz Core speeds (MHz): 1: 1539 2: 1427 
+   3: 2087 4: 1516 
+ Graphics:
+   Device-1: NVIDIA GK106 [GeForce GTX 660] vendor: Gigabyte driver: nvidia 
+   v: 460.39 bus ID: 01:00.0 chip ID: 10de:11c0 
+   Display: x11 server: X.Org 1.20.9 driver: nvidia 
+   unloaded: fbdev,modesetting,nouveau,vesa compositor: marco v: 1.24.0 
+   resolution: 1920x1080~60Hz 
+   OpenGL: renderer: GeForce GTX 660/PCIe/SSE2 v: 4.6.0 NVIDIA 460.39 
+   direct render: Yes 
+ -------------------------------------------------------------------
+ With lowlatency working mesa driver in very low resolution:
+ -------------------------------------------------------------------
+ Graphics:
+   Device-1: NVIDIA GK106 [GeForce GTX 660] vendor: Gigabyte driver: nvidia 
+   v: 460.39 bus ID: 01:00.0 chip ID: 10de:11c0 
+   Display: x11 server: X.Org 1.20.9 driver: fbdev,modesetting,nouveau 
+   unloaded: vesa compositor: marco v: 1.24.0 resolution: 640x480~73Hz 
+   OpenGL: renderer: llvmpipe (LLVM 11.0.0 256 bits) v: 4.5 Mesa 20.2.6 
+   compat-v: 3.1 direct render: Yes 
+ -------------------------------------------------------------------

** Description changed:

  I installed:
  " linux-lowlatency " which installed kernel 5.4
  
  Then I installed
  linux-lowlatency-hwe-20.04
  linux-lowlatency-hwe-20.04-edge
  which installed kernel 5.8
  
  Questions:
  
  1. Is any documentation for what it is "hwe" and "edge" from
  "linux-lowlatency-hwe-20.04-edge" ?
  
  2. I use Linux Mint 20.1 and kernel lowlatency sometimes nvidia driver
  not working. More often does not work.
  
  I've compared Xorg.0.log with Meld and
  with low latency is missing line for example:
  -------------------------
  [    13.804] (II) xfree86: Adding drm device (/dev/dri/card0)
  [    13.806] (**) OutputClass "nvidia" ModulePath extended to 
"/usr/lib/x86_64-linux-gnu/nvidia/xorg,/usr/lib/xorg/modules"
  -------------------------
  
  Then with lowlatency kernel I have
  --------------
  [    13.187] (EE) [drm] Failed to open DRM device for pci:0000:01:00.0: -19
  ...
  [    13.188] (EE) Screen 0 deleted because of no matching config section.
  --------------
  
  -------------------------------------------------------------------
  $ apt policy linux-lowlatency-hwe-20.04
  linux-lowlatency-hwe-20.04:
    Installed: 5.8.0.44.50~20.04.30
    Candidate:   5.8.0.44.50~20.04.30
    Version table:
   *** 5.8.0.44.50~20.04.30 500
          500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
          500 http://security.ubuntu.com/ubuntu focal-security/main amd64 
Packages
          100 /var/lib/dpkg/status
       5.4.0.26.32 500
          500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
  -------------------------------------------------------------------
  -------------------------------------------------------------------
  $ inxi -Fxxxrz
  System:
-   Kernel: 5.8.0-44-generic x86_64 bits: 64 compiler: N/A 
-   Desktop: MATE 1.24.0 info: mate-panel wm: marco 1.24.0 dm: LightDM 1.30.0 
-   Distro: Linux Mint 20.1 Ulyssa base: Ubuntu 20.04 focal 
+   Kernel: 5.8.0-44-generic x86_64 bits: 64 compiler: N/A
+   Desktop: MATE 1.24.0 info: mate-panel wm: marco 1.24.0 dm: LightDM 1.30.0
+   Distro: Linux Mint 20.1 Ulyssa base: Ubuntu 20.04 focal
  Machine:
-   Type: Desktop Mobo: MSI model: B150M PRO-VDH (MS-7982) v: 1.0 
-   serial: <filter> UEFI [Legacy]: American Megatrends v: 3.H0 
-   date: 07/10/2018 
+   Type: Desktop Mobo: MSI model: B150M PRO-VDH (MS-7982) v: 1.0
+   serial: <filter> UEFI [Legacy]: American Megatrends v: 3.H0
+   date: 07/10/2018
  CPU:
-   Topology: Quad Core model: Intel Core i5-6400 bits: 64 type: MCP 
-   arch: Skylake-S rev: 3 L2 cache: 6144 KiB 
-   flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx 
-   bogomips: 21599 
-   Speed: 1539 MHz min/max: 800/3300 MHz Core speeds (MHz): 1: 1539 2: 1427 
-   3: 2087 4: 1516 
+   Topology: Quad Core model: Intel Core i5-6400 bits: 64 type: MCP
+   arch: Skylake-S rev: 3 L2 cache: 6144 KiB
+   flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
+   bogomips: 21599
+   Speed: 1539 MHz min/max: 800/3300 MHz Core speeds (MHz): 1: 1539 2: 1427
+   3: 2087 4: 1516
  Graphics:
-   Device-1: NVIDIA GK106 [GeForce GTX 660] vendor: Gigabyte driver: nvidia 
-   v: 460.39 bus ID: 01:00.0 chip ID: 10de:11c0 
-   Display: x11 server: X.Org 1.20.9 driver: nvidia 
-   unloaded: fbdev,modesetting,nouveau,vesa compositor: marco v: 1.24.0 
-   resolution: 1920x1080~60Hz 
-   OpenGL: renderer: GeForce GTX 660/PCIe/SSE2 v: 4.6.0 NVIDIA 460.39 
-   direct render: Yes 
+   Device-1: NVIDIA GK106 [GeForce GTX 660] vendor: Gigabyte driver: nvidia
+   v: 460.39 bus ID: 01:00.0 chip ID: 10de:11c0
+   Display: x11 server: X.Org 1.20.9 driver: nvidia
+   unloaded: fbdev,modesetting,nouveau,vesa compositor: marco v: 1.24.0
+   resolution: 1920x1080~60Hz
+   OpenGL: renderer: GeForce GTX 660/PCIe/SSE2 v: 4.6.0 NVIDIA 460.39
+   direct render: Yes
  -------------------------------------------------------------------
- With lowlatency working mesa driver in very low resolution:
+ With lowlatency kernel system automatically switches to mesa driver in very 
low resolution:
  -------------------------------------------------------------------
  Graphics:
-   Device-1: NVIDIA GK106 [GeForce GTX 660] vendor: Gigabyte driver: nvidia 
-   v: 460.39 bus ID: 01:00.0 chip ID: 10de:11c0 
-   Display: x11 server: X.Org 1.20.9 driver: fbdev,modesetting,nouveau 
-   unloaded: vesa compositor: marco v: 1.24.0 resolution: 640x480~73Hz 
-   OpenGL: renderer: llvmpipe (LLVM 11.0.0 256 bits) v: 4.5 Mesa 20.2.6 
-   compat-v: 3.1 direct render: Yes 
+   Device-1: NVIDIA GK106 [GeForce GTX 660] vendor: Gigabyte driver: nvidia
+   v: 460.39 bus ID: 01:00.0 chip ID: 10de:11c0
+   Display: x11 server: X.Org 1.20.9 driver: fbdev,modesetting,nouveau
+   unloaded: vesa compositor: marco v: 1.24.0 resolution: 640x480~73Hz
+   OpenGL: renderer: llvmpipe (LLVM 11.0.0 256 bits) v: 4.5 Mesa 20.2.6
+   compat-v: 3.1 direct render: Yes
  -------------------------------------------------------------------

** Description changed:

  I installed:
  " linux-lowlatency " which installed kernel 5.4
  
  Then I installed
  linux-lowlatency-hwe-20.04
  linux-lowlatency-hwe-20.04-edge
  which installed kernel 5.8
  
  Questions:
  
  1. Is any documentation for what it is "hwe" and "edge" from
  "linux-lowlatency-hwe-20.04-edge" ?
  
  2. I use Linux Mint 20.1 and kernel lowlatency sometimes nvidia driver
  not working. More often does not work.
  
  I've compared Xorg.0.log with Meld and
  with low latency is missing line for example:
  -------------------------
  [    13.804] (II) xfree86: Adding drm device (/dev/dri/card0)
  [    13.806] (**) OutputClass "nvidia" ModulePath extended to 
"/usr/lib/x86_64-linux-gnu/nvidia/xorg,/usr/lib/xorg/modules"
+ ...
+ [    13.845] (II) Applying OutputClass "nvidia" to /dev/dri/card0
+ [    13.845]  loading driver: nvidia
+ [    14.084] (==) Matched nvidia as autoconfigured driver 0
+ ...
+ [    14.084] (II) LoadModule: "nvidia"
+ [    14.084] (II) Loading /usr/lib/x86_64-linux-gnu/nvidia/xorg/nvidia_drv.so
+ [    14.093] (II) Module nvidia: vendor="NVIDIA Corporation"
+ [    14.093]  compiled for 1.6.99.901, module version = 1.0.0
+ [    14.093]  Module class: X.Org Video Driver
+ ...
+ [    14.100] (II) NVIDIA dlloader X Driver  460.39  Thu Jan 21 21:54:11 UTC 
2021
+ [    14.100] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
+ ...
+ [    14.104] (II) Loading sub module "fb"
+ [    14.104] (II) LoadModule: "fb"
+ [    14.104] (II) Loading /usr/lib/xorg/modules/libfb.so
+ [    14.105] (II) Module fb: vendor="X.Org Foundation"
+ [    14.105]  compiled for 1.20.9, module version = 1.0.0
+ [    14.105]  ABI class: X.Org ANSI C Emulation, version 0.4
+ [    14.105] (II) Loading sub module "wfb"
+ [    14.105] (II) LoadModule: "wfb"
+ ...
  -------------------------
  
  Then with lowlatency kernel I have
  --------------
  [    13.187] (EE) [drm] Failed to open DRM device for pci:0000:01:00.0: -19
  ...
  [    13.188] (EE) Screen 0 deleted because of no matching config section.
  --------------
  
  -------------------------------------------------------------------
  $ apt policy linux-lowlatency-hwe-20.04
  linux-lowlatency-hwe-20.04:
    Installed: 5.8.0.44.50~20.04.30
    Candidate:   5.8.0.44.50~20.04.30
    Version table:
   *** 5.8.0.44.50~20.04.30 500
          500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
          500 http://security.ubuntu.com/ubuntu focal-security/main amd64 
Packages
          100 /var/lib/dpkg/status
       5.4.0.26.32 500
          500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
  -------------------------------------------------------------------
  -------------------------------------------------------------------
  $ inxi -Fxxxrz
  System:
    Kernel: 5.8.0-44-generic x86_64 bits: 64 compiler: N/A
    Desktop: MATE 1.24.0 info: mate-panel wm: marco 1.24.0 dm: LightDM 1.30.0
    Distro: Linux Mint 20.1 Ulyssa base: Ubuntu 20.04 focal
  Machine:
    Type: Desktop Mobo: MSI model: B150M PRO-VDH (MS-7982) v: 1.0
    serial: <filter> UEFI [Legacy]: American Megatrends v: 3.H0
    date: 07/10/2018
  CPU:
    Topology: Quad Core model: Intel Core i5-6400 bits: 64 type: MCP
    arch: Skylake-S rev: 3 L2 cache: 6144 KiB
    flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
    bogomips: 21599
    Speed: 1539 MHz min/max: 800/3300 MHz Core speeds (MHz): 1: 1539 2: 1427
    3: 2087 4: 1516
  Graphics:
    Device-1: NVIDIA GK106 [GeForce GTX 660] vendor: Gigabyte driver: nvidia
    v: 460.39 bus ID: 01:00.0 chip ID: 10de:11c0
    Display: x11 server: X.Org 1.20.9 driver: nvidia
    unloaded: fbdev,modesetting,nouveau,vesa compositor: marco v: 1.24.0
    resolution: 1920x1080~60Hz
    OpenGL: renderer: GeForce GTX 660/PCIe/SSE2 v: 4.6.0 NVIDIA 460.39
    direct render: Yes
  -------------------------------------------------------------------
  With lowlatency kernel system automatically switches to mesa driver in very 
low resolution:
  -------------------------------------------------------------------
  Graphics:
    Device-1: NVIDIA GK106 [GeForce GTX 660] vendor: Gigabyte driver: nvidia
    v: 460.39 bus ID: 01:00.0 chip ID: 10de:11c0
    Display: x11 server: X.Org 1.20.9 driver: fbdev,modesetting,nouveau
    unloaded: vesa compositor: marco v: 1.24.0 resolution: 640x480~73Hz
    OpenGL: renderer: llvmpipe (LLVM 11.0.0 256 bits) v: 4.5 Mesa 20.2.6
    compat-v: 3.1 direct render: Yes
  -------------------------------------------------------------------

** Description changed:

  I installed:
- " linux-lowlatency " which installed kernel 5.4
+ " linux-lowlatency " which installed kernel 5.4 and I had very low resolution.
  
  Then I installed
  linux-lowlatency-hwe-20.04
  linux-lowlatency-hwe-20.04-edge
  which installed kernel 5.8
  
+ Yesterday kernel lowlatency worked, today not working.
+ I tried update system today, but it not helped.
+ 
+ 
  Questions:
  
  1. Is any documentation for what it is "hwe" and "edge" from
  "linux-lowlatency-hwe-20.04-edge" ?
  
- 2. I use Linux Mint 20.1 and kernel lowlatency sometimes nvidia driver
- not working. More often does not work.
+ 2. I use Linux Mint 20.1 and kernel lowlatency and sometimes nvidia
+ driver not working. More often does not work.
  
+ 
+ ========================================================================
  I've compared Xorg.0.log with Meld and
  with low latency is missing line for example:
  -------------------------
  [    13.804] (II) xfree86: Adding drm device (/dev/dri/card0)
  [    13.806] (**) OutputClass "nvidia" ModulePath extended to 
"/usr/lib/x86_64-linux-gnu/nvidia/xorg,/usr/lib/xorg/modules"
  ...
  [    13.845] (II) Applying OutputClass "nvidia" to /dev/dri/card0
  [    13.845]  loading driver: nvidia
  [    14.084] (==) Matched nvidia as autoconfigured driver 0
  ...
  [    14.084] (II) LoadModule: "nvidia"
  [    14.084] (II) Loading /usr/lib/x86_64-linux-gnu/nvidia/xorg/nvidia_drv.so
  [    14.093] (II) Module nvidia: vendor="NVIDIA Corporation"
  [    14.093]  compiled for 1.6.99.901, module version = 1.0.0
  [    14.093]  Module class: X.Org Video Driver
  ...
  [    14.100] (II) NVIDIA dlloader X Driver  460.39  Thu Jan 21 21:54:11 UTC 
2021
  [    14.100] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
  ...
  [    14.104] (II) Loading sub module "fb"
  [    14.104] (II) LoadModule: "fb"
  [    14.104] (II) Loading /usr/lib/xorg/modules/libfb.so
  [    14.105] (II) Module fb: vendor="X.Org Foundation"
  [    14.105]  compiled for 1.20.9, module version = 1.0.0
  [    14.105]  ABI class: X.Org ANSI C Emulation, version 0.4
  [    14.105] (II) Loading sub module "wfb"
  [    14.105] (II) LoadModule: "wfb"
  ...
  -------------------------
  
  Then with lowlatency kernel I have
  --------------
  [    13.187] (EE) [drm] Failed to open DRM device for pci:0000:01:00.0: -19
  ...
  [    13.188] (EE) Screen 0 deleted because of no matching config section.
  --------------
  
  -------------------------------------------------------------------
  $ apt policy linux-lowlatency-hwe-20.04
  linux-lowlatency-hwe-20.04:
    Installed: 5.8.0.44.50~20.04.30
    Candidate:   5.8.0.44.50~20.04.30
    Version table:
   *** 5.8.0.44.50~20.04.30 500
          500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
          500 http://security.ubuntu.com/ubuntu focal-security/main amd64 
Packages
          100 /var/lib/dpkg/status
       5.4.0.26.32 500
          500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
  -------------------------------------------------------------------
  -------------------------------------------------------------------
  $ inxi -Fxxxrz
  System:
    Kernel: 5.8.0-44-generic x86_64 bits: 64 compiler: N/A
    Desktop: MATE 1.24.0 info: mate-panel wm: marco 1.24.0 dm: LightDM 1.30.0
    Distro: Linux Mint 20.1 Ulyssa base: Ubuntu 20.04 focal
  Machine:
    Type: Desktop Mobo: MSI model: B150M PRO-VDH (MS-7982) v: 1.0
    serial: <filter> UEFI [Legacy]: American Megatrends v: 3.H0
    date: 07/10/2018
  CPU:
    Topology: Quad Core model: Intel Core i5-6400 bits: 64 type: MCP
    arch: Skylake-S rev: 3 L2 cache: 6144 KiB
    flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
    bogomips: 21599
    Speed: 1539 MHz min/max: 800/3300 MHz Core speeds (MHz): 1: 1539 2: 1427
    3: 2087 4: 1516
  Graphics:
    Device-1: NVIDIA GK106 [GeForce GTX 660] vendor: Gigabyte driver: nvidia
    v: 460.39 bus ID: 01:00.0 chip ID: 10de:11c0
    Display: x11 server: X.Org 1.20.9 driver: nvidia
    unloaded: fbdev,modesetting,nouveau,vesa compositor: marco v: 1.24.0
    resolution: 1920x1080~60Hz
    OpenGL: renderer: GeForce GTX 660/PCIe/SSE2 v: 4.6.0 NVIDIA 460.39
    direct render: Yes
  -------------------------------------------------------------------
  With lowlatency kernel system automatically switches to mesa driver in very 
low resolution:
  -------------------------------------------------------------------
  Graphics:
    Device-1: NVIDIA GK106 [GeForce GTX 660] vendor: Gigabyte driver: nvidia
    v: 460.39 bus ID: 01:00.0 chip ID: 10de:11c0
    Display: x11 server: X.Org 1.20.9 driver: fbdev,modesetting,nouveau
    unloaded: vesa compositor: marco v: 1.24.0 resolution: 640x480~73Hz
    OpenGL: renderer: llvmpipe (LLVM 11.0.0 256 bits) v: 4.5 Mesa 20.2.6
    compat-v: 3.1 direct render: Yes
  -------------------------------------------------------------------

** Description changed:

  I installed:
  " linux-lowlatency " which installed kernel 5.4 and I had very low resolution.
  
  Then I installed
  linux-lowlatency-hwe-20.04
  linux-lowlatency-hwe-20.04-edge
  which installed kernel 5.8
  
- Yesterday kernel lowlatency worked, today not working.
+ Yesterday kernel lowlatency worked, today not working with nvidia.
  I tried update system today, but it not helped.
- 
  
  Questions:
  
  1. Is any documentation for what it is "hwe" and "edge" from
  "linux-lowlatency-hwe-20.04-edge" ?
  
  2. I use Linux Mint 20.1 and kernel lowlatency and sometimes nvidia
  driver not working. More often does not work.
- 
  
  ========================================================================
  I've compared Xorg.0.log with Meld and
  with low latency is missing line for example:
  -------------------------
  [    13.804] (II) xfree86: Adding drm device (/dev/dri/card0)
  [    13.806] (**) OutputClass "nvidia" ModulePath extended to 
"/usr/lib/x86_64-linux-gnu/nvidia/xorg,/usr/lib/xorg/modules"
  ...
  [    13.845] (II) Applying OutputClass "nvidia" to /dev/dri/card0
  [    13.845]  loading driver: nvidia
  [    14.084] (==) Matched nvidia as autoconfigured driver 0
  ...
  [    14.084] (II) LoadModule: "nvidia"
  [    14.084] (II) Loading /usr/lib/x86_64-linux-gnu/nvidia/xorg/nvidia_drv.so
  [    14.093] (II) Module nvidia: vendor="NVIDIA Corporation"
  [    14.093]  compiled for 1.6.99.901, module version = 1.0.0
  [    14.093]  Module class: X.Org Video Driver
  ...
  [    14.100] (II) NVIDIA dlloader X Driver  460.39  Thu Jan 21 21:54:11 UTC 
2021
  [    14.100] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
  ...
  [    14.104] (II) Loading sub module "fb"
  [    14.104] (II) LoadModule: "fb"
  [    14.104] (II) Loading /usr/lib/xorg/modules/libfb.so
  [    14.105] (II) Module fb: vendor="X.Org Foundation"
  [    14.105]  compiled for 1.20.9, module version = 1.0.0
  [    14.105]  ABI class: X.Org ANSI C Emulation, version 0.4
  [    14.105] (II) Loading sub module "wfb"
  [    14.105] (II) LoadModule: "wfb"
  ...
  -------------------------
  
  Then with lowlatency kernel I have
  --------------
  [    13.187] (EE) [drm] Failed to open DRM device for pci:0000:01:00.0: -19
  ...
  [    13.188] (EE) Screen 0 deleted because of no matching config section.
  --------------
  
  -------------------------------------------------------------------
  $ apt policy linux-lowlatency-hwe-20.04
  linux-lowlatency-hwe-20.04:
    Installed: 5.8.0.44.50~20.04.30
    Candidate:   5.8.0.44.50~20.04.30
    Version table:
   *** 5.8.0.44.50~20.04.30 500
          500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
          500 http://security.ubuntu.com/ubuntu focal-security/main amd64 
Packages
          100 /var/lib/dpkg/status
       5.4.0.26.32 500
          500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
  -------------------------------------------------------------------
  -------------------------------------------------------------------
  $ inxi -Fxxxrz
  System:
    Kernel: 5.8.0-44-generic x86_64 bits: 64 compiler: N/A
    Desktop: MATE 1.24.0 info: mate-panel wm: marco 1.24.0 dm: LightDM 1.30.0
    Distro: Linux Mint 20.1 Ulyssa base: Ubuntu 20.04 focal
  Machine:
    Type: Desktop Mobo: MSI model: B150M PRO-VDH (MS-7982) v: 1.0
    serial: <filter> UEFI [Legacy]: American Megatrends v: 3.H0
    date: 07/10/2018
  CPU:
    Topology: Quad Core model: Intel Core i5-6400 bits: 64 type: MCP
    arch: Skylake-S rev: 3 L2 cache: 6144 KiB
    flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
    bogomips: 21599
    Speed: 1539 MHz min/max: 800/3300 MHz Core speeds (MHz): 1: 1539 2: 1427
    3: 2087 4: 1516
  Graphics:
    Device-1: NVIDIA GK106 [GeForce GTX 660] vendor: Gigabyte driver: nvidia
    v: 460.39 bus ID: 01:00.0 chip ID: 10de:11c0
    Display: x11 server: X.Org 1.20.9 driver: nvidia
    unloaded: fbdev,modesetting,nouveau,vesa compositor: marco v: 1.24.0
    resolution: 1920x1080~60Hz
    OpenGL: renderer: GeForce GTX 660/PCIe/SSE2 v: 4.6.0 NVIDIA 460.39
    direct render: Yes
  -------------------------------------------------------------------
  With lowlatency kernel system automatically switches to mesa driver in very 
low resolution:
  -------------------------------------------------------------------
  Graphics:
    Device-1: NVIDIA GK106 [GeForce GTX 660] vendor: Gigabyte driver: nvidia
    v: 460.39 bus ID: 01:00.0 chip ID: 10de:11c0
    Display: x11 server: X.Org 1.20.9 driver: fbdev,modesetting,nouveau
    unloaded: vesa compositor: marco v: 1.24.0 resolution: 640x480~73Hz
    OpenGL: renderer: llvmpipe (LLVM 11.0.0 256 bits) v: 4.5 Mesa 20.2.6
    compat-v: 3.1 direct render: Yes
  -------------------------------------------------------------------

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https://bugs.launchpad.net/bugs/1918454

Title:
  linux-lowlatency-hwe-20.04

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