Ubuntu 20.10 gnome-control-center dropdowns missing for screen resolution and primary screen

[Rocko]

The Ubuntu 20.10 version of g-c-c lacks the dropdown controls for changing screen resolution or selecting the primary monitor. Where there is normally a dropdown, there is just a label showing the current screen resolution or primary monitor. In some cases the dropdown is there, eg it might be there for the laptop monitor but not the external monitor(s). Changing the resolution of a monitor using xrandr sometimes makes the dropdown appear in g-c-c.

I have attached a screenshot showing the issue.

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: gnome-control-center 1:3.37.90-1ubuntu2
Uname: Linux 5.9.0-050900rc3-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu45
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Sep 3 12:55:12 2020
InstallationDate: Installed on 2019-07-01 (429 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Alpha amd64 (20190606)
SourcePackage: gnome-control-center
UpgradeStatus: Upgraded to groovy on 2020-09-01 (1 days ago)

[Rocko (rockorequin)]

Perhaps of interest: if I set the primary monitor to the external monitor via xrandr and then run g-c-c, g-c-c shows a dropdown that allows me to select the laptop monitor as primary. Then if I close g-c-c and re-run it, the dropdown doesn't appear any more.

[corrado venturini (corradoventu)]

Same problem on my laptop with just primary screen

corrado@corrado-n4-gg-0905:~$ inxi -Fx
System: Host: corrado-n4-gg-0905 Kernel: 5.8.0-18-generic x86_64 bits: 64 compiler: N/A Desktop: N/A
           Distro: Ubuntu 20.10 (Groovy Gorilla)
Machine: Type: Laptop System: Dell product: Inspiron 3793 v: N/A serial: <superuser/root required>
           Mobo: Dell model: 0C1PF2 v: A00 serial: <superuser/root required> UEFI: Dell v: 1.5.0 date: 12/17/2019
Battery: ID-1: BAT0 charge: 19.3 Wh condition: 37.1/42.0 Wh (88%) model: SWD-ATL3.618 DELL WJPC403 status: Discharging
CPU: Info: 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: 3124 MHz min/max: 400/3600 MHz Core speeds (MHz): 1: 3597 2: 2719 3: 1847 4: 963 5: 3199 6: 1892 7: 3600
           8: 2195
Graphics: Device-1: Intel Iris Plus Graphics G1 vendor: Dell driver: i915 v: kernel bus ID: 00:02.0
           Device-2: Realtek Integrated_Webcam_HD type: USB driver: uvcvideo bus ID: 1-6:3
           Display: x11 server: X.Org 1.20.8 driver: modesetting unloaded: fbdev,vesa resolution: 1920x1080~60Hz
           OpenGL: renderer: Mesa Intel UHD Graphics (ICL GT1) v: 4.6 Mesa 20.1.5 direct render: Yes
Audio: Device-1: Intel Smart Sound Audio vendor: Dell driver: snd_hda_intel v: kernel bus ID: 00:1f.3
           Sound Server: ALSA v: k5.8.0-18-generic
Network: Device-1: Realtek RTL810xE PCI Express Fast Ethernet vendor: Dell driver: r8169 v: kernel port: 3000
           bus ID: 01:00.0
           IF: enp1s0 state: down mac: 98:e7:43:59:19:19
           Device-2: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter vendor: Dell driver: ath10k_pci v: kernel
           port: 3000 bus ID: 02:00.0
           IF: wlp2s0 state: up mac: d8:12:65:b8:21:b9
           Device-3: Qualcomm Atheros type: USB driver: btusb bus ID: 1-10:4
Drives: Local Storage: total: 476.94 GiB used: 8.13 GiB (1.7%)
           ID-1: /dev/nvme0n1 vendor: Toshiba model: KBG40ZNS512G NVMe KIOXIA 512GB size: 476.94 GiB
Partition: ID-1: / size: 31.25 GiB used: 8.08 GiB (25.9%) fs: ext4 dev: /dev/nvme0n1p4
Swap: ID-1: swap-1 type: partition size: 8.00 GiB used: 0 KiB (0.0%) dev: /dev/nvme0n1p2
Sensors: System Temperatures: cpu: 54.0 C mobo: N/A
           Fan Speeds (RPM): cpu: 0
Info: Processes: 270 Uptime: 1h 07m Memory: 7.55 GiB used: 1.38 GiB (18.3%) Init: systemd runlevel: 5 Compilers: gcc: N/A
           Packages: 1806 Shell: Bash v: 5.0.17 inxi: 3.1.06
corrado@corrado-n4-gg-0905:~$

[Rocko (rockorequin)]

Also may be of interest: if I set either laptop or external monitor to a non-native resolution, I do get a dropdown for the screen set to non-native resolution and can change the resolution in g-c-c.

[corrado venturini (corradoventu)]

Also dropdown for orientation is missing

[Rocko (rockorequin)]

I think this might be fixed now - g-c-c hasn't updated, but I am seeing the dropdowns for resolution and primary display now.

[Daniel van Vugt (vanvugt)]

Yep, fixed, somewhere.