[SOLVED]NVIDIA X server screen settings blank

[doraelixir]

When I open the NVIDIA X server screen settings application, it opens up blank as shown:

It had opened up properly the first time I had started it after switching from nouveau to nvidia proprietary drivers. Then I switched prime profile to "intel power saving mode" and restarted the OS. Since then it opens up blank.

I have tried switching to nouveau and then switching back to proprietary and I have tried selecting the older nvidia-driver-450 instead of nvidia-driver-460 but it did not work.
This is on a new installation of linux mint 20.1 cinnamon.

system information:

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System:    Kernel: 5.4.0-65-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 Desktop: Cinnamon 4.8.6 
           wm: muffin dm: LightDM Distro: Linux Mint 20.1 Ulyssa base: Ubuntu 20.04 focal 
Machine:   Type: Laptop System: Dell product: Vostro 14 5401 v: N/A serial: <filter> Chassis: 
           type: 10 serial: <filter> 
           Mobo: Dell model: 0C54N1 v: A00 serial: <filter> UEFI: Dell v: 1.5.3 date: 12/18/2020 
Battery:   ID-1: BAT0 charge: 29.9 Wh condition: 37.9/39.8 Wh (95%) volts: 11.9/11.2 
           model: SMP DELL C5KG607 serial: <filter> status: Discharging 
CPU:       Topology: Quad Core model: Intel Core i5-1035G1 bits: 64 type: MT MCP arch: Ice Lake 
           rev: 5 L2 cache: 6144 KiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 19046 
           Speed: 1100 MHz min/max: 400/3600 MHz Core speeds (MHz): 1: 1083 2: 1084 3: 1063 
           4: 1064 5: 1075 6: 1079 7: 1067 8: 1078 
Graphics:  Device-1: Intel vendor: Dell driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:8a56 
           Device-2: NVIDIA GP108M [GeForce MX330] driver: N/A bus ID: 01:00.0 chip ID: 10de:1d16 
           Display: x11 server: X.Org 1.20.9 driver: modesetting unloaded: fbdev,vesa 
           resolution: 1920x1080~60Hz 
           OpenGL: renderer: Mesa Intel UHD Graphics (ICL GT1) v: 4.6 Mesa 20.2.6 
           direct render: Yes 
Audio:     Device-1: Intel Smart Sound Audio vendor: Dell driver: snd_hda_intel v: kernel 
           bus ID: 00:1f.3 chip ID: 8086:34c8 
           Sound Server: ALSA v: k5.4.0-65-generic 
Network:   Device-1: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter vendor: Dell 
           driver: ath10k_pci v: kernel port: 4000 bus ID: 02:00.0 chip ID: 168c:003e 
           IF: wlp2s0 state: up mac: <filter> 
           Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: Dell 
           driver: r8169 v: kernel port: 3000 bus ID: 03:00.0 chip ID: 10ec:8168 
           IF: enp3s0 state: down mac: <filter> 
           Device-3: Qualcomm Atheros type: USB driver: btusb bus ID: 3-10:5 chip ID: 0cf3:e007 
Drives:    Local Storage: total: 484.34 GiB used: 20.68 GiB (4.3%) 
           ID-1: /dev/nvme0n1 vendor: SK Hynix model: BC511 NVMe 512GB size: 476.94 GiB 
           speed: 31.6 Gb/s lanes: 4 serial: <filter> 
           ID-2: /dev/sda type: USB vendor: Generic model: SD MMC MS PRO size: 7.40 GiB 
           serial: <filter> 
Partition: ID-1: / size: 95.96 GiB used: 20.58 GiB (21.4%) fs: ext4 dev: /dev/nvme0n1p8 
Sensors:   System Temperatures: cpu: 67.0 C mobo: N/A 
           Fan Speeds (RPM): cpu: 0 
Repos:     No active apt repos in: /etc/apt/sources.list 
           Active apt repos in: /etc/apt/sources.list.d/google-chrome.list 
           1: deb [arch=amd64] http: //dl.google.com/linux/chrome/deb/ stable main
           Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list 
           1: deb http: //packages.linuxmint.com ulyssa main upstream import backport #id:linuxmint_main
           2: deb http: //archive.ubuntu.com/ubuntu focal main restricted universe multiverse
           3: deb http: //archive.ubuntu.com/ubuntu focal-updates main restricted universe multiverse
           4: deb http: //archive.ubuntu.com/ubuntu focal-backports main restricted universe multiverse
           5: deb http: //security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
           6: deb http: //archive.canonical.com/ubuntu/ focal partner
           Active apt repos in: /etc/apt/sources.list.d/vscode.list 
           1: deb [arch=amd64,arm64,armhf] http: //packages.microsoft.com/repos/code stable main
Info:      Processes: 248 Uptime: 1h 14m Memory: 7.55 GiB used: 1.34 GiB (17.8%) Init: systemd 
           v: 245 runlevel: 5 Compilers: gcc: 9.3.0 alt: 9 Client: Unknown python3.8 client 
           inxi: 3.0.38 

[roblm]

That happens after the ubuntu-drivers-common package is updated. The nvidia-prime applet in the System Tray also is missing in Intel mode. There are two solutions discussed in this post:
viewtopic.php?p=1964608#p1964608


This post has the solution by burntex:
viewtopic.php?p=1964360#p1964360

Use this command to open the /usr/bin/prime-supported file:
xed admin:///usr/bin/prime-supported

Change this line:

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if [ -e "/var/lib/ubuntu-drivers-common/requires_offloading" ]; then

To this:

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if [ -e "/var/lib/ubuntu-drivers-common/requires_offloading" || true ]; then

[doraelixir]

Thank you! This works