Greeter Does Not Scale According To HiDPI Preference In MATE Tweak

[Alan Diggs]

The greeter does not respect users' HiDPI preferences, leaving the greeter at default scale while the desktop session scales accordingly.

Ubuntu MATE 20.10

Monitor resolution and size:
3840x2160 - 28" (This is not necessarily ideal for HiDPI and does not automatically trigger scaling. Thus, a manual toggle to force scaling is needed, which only seems to affect the desktop session.)

System information:

System: Kernel: 5.8.0-31-generic x86_64 bits: 64 compiler: gcc v: 10.2.0 Desktop: MATE 1.24.1
           Distro: Ubuntu 20.10 (Groovy Gorilla)
Machine: Type: Desktop Mobo: Micro-Star model: MPG X570 GAMING PLUS (MS-7C37) v: 2.0
           serial: <filter> UEFI: American Megatrends v: A.B0 date: 10/29/2020
CPU: Info: 8-Core model: AMD Ryzen 7 3800X bits: 64 type: MT MCP arch: Zen 2 L2 cache: 4096 KiB
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 139994
           Speed: 4375 MHz min/max: N/A Core speeds (MHz): 1: 4375 2: 4371 3: 4375 4: 4383 5: 4361
           6: 4383 7: 4372 8: 4376 9: 4368 10: 4374 11: 4369 12: 4374 13: 4376 14: 4369 15: 4374
           16: 4375
Graphics: Device-1: AMD Navi 10 [Radeon RX 5600 OEM/5600 XT / 5700/5700 XT] vendor: XFX Pine
           driver: amdgpu v: kernel bus ID: 2f:00.0
           Display: x11 server: X.Org 1.20.9 driver: amdgpu,ati
           unloaded: fbdev,modesetting,radeon,vesa resolution: 3840x2160~60Hz
           OpenGL: renderer: AMD Radeon RX 5700 XT (NAVI10 DRM 3.38.0 5.8.0-31-generic LLVM 11.0.0)
           v: 4.6 Mesa 20.2.1 direct render: Yes
Audio: Device-1: AMD Navi 10 HDMI Audio driver: snd_hda_intel v: kernel bus ID: 2f:00.1
           Device-2: AMD Starship/Matisse HD Audio vendor: Micro-Star MSI driver: snd_hda_intel
           v: kernel bus ID: 31:00.4
           Device-3: Logitech HD Pro Webcam C920 type: USB driver: snd-usb-audio,uvcvideo
           bus ID: 1-2:3
           Device-4: C-Media Blue Snowball type: USB driver: hid-generic,snd-usb-audio,usbhid
           bus ID: 1-1:2
           Device-5: Kingston HyperX 7.1 Audio type: USB driver: hid-generic,snd-usb-audio,usbhid
           bus ID: 3-1:2
           Sound Server: ALSA v: k5.8.0-31-generic
Network: Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
           vendor: Micro-Star MSI X570-A PRO driver: r8169 v: kernel port: d000 bus ID: 27:00.0
           IF: enp39s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives: Local Storage: total: 2.27 TiB used: 138.33 GiB (5.9%)
           ID-1: /dev/nvme0n1 vendor: Western Digital model: WDS500G3X0C-00SJG0 size: 465.76 GiB
           ID-2: /dev/sda vendor: Western Digital model: WDS500G2B0A-00SM50 size: 465.76 GiB
           ID-3: /dev/sdb vendor: Western Digital model: WDS500G2B0A-00SM50 size: 465.76 GiB
           ID-4: /dev/sdc vendor: Western Digital model: WDS500G2B0A-00SM50 size: 465.76 GiB
           ID-5: /dev/sdd vendor: Western Digital model: WDS500G2B0A-00SM50 size: 465.76 GiB
Partition: ID-1: / size: 463.85 GiB used: 7.72 GiB (1.7%) fs: btrfs dev: /dev/nvme0n1p3
           ID-2: /boot size: 945.6 MiB used: 214.4 MiB (22.7%) fs: ext4 dev: /dev/nvme0n1p2
           ID-3: /home size: 463.85 GiB used: 7.72 GiB (1.7%) fs: btrfs dev: /dev/nvme0n1p3
Swap: ID-1: swap-1 type: zram size: 32.91 GiB used: 0 KiB (0.0%) dev: /dev/zram0
Sensors: System Temperatures: cpu: 42.8 C mobo: N/A gpu: amdgpu temp: 35.0 C
           Fan Speeds (RPM): N/A gpu: amdgpu fan: 0
Info: Processes: 410 Uptime: 13m Memory: 31.34 GiB used: 2.38 GiB (7.6%) Init: systemd
           runlevel: 5 Compilers: gcc: 10.2.0 Packages: 2089 Shell: Bash v: 5.0.17 inxi: 3.1.07

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: lightdm-gtk-greeter 2.0.6-0ubuntu2
ProcVersionSignature: Ubuntu 5.8.0-31.33-generic 5.8.17
Uname: Linux 5.8.0-31-generic x86_64
ApportVersion: 2.20.11-0ubuntu50.2
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: MATE
Date: Wed Dec 2 15:05:32 2020
InstallationDate: Installed on 2020-12-02 (0 days ago)
InstallationMedia: Ubuntu-MATE 20.10 "Groovy Gorilla" - Release amd64 (20201022)
SourcePackage: lightdm-gtk-greeter
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.lightdm.lightdm-gtk-greeter.conf: 2020-12-02T09:34:34.087473

[Norbert (nrbrtx)]

Can you reproduce this bug with newer version of Ubuntu MATE?

[Launchpad Janitor (janitor)]

[Expired for lightdm-gtk-greeter (Ubuntu) because there has been no activity for 60 days.]