Long delay before greeter shows up after suspend

[ghost]

What Happened?

When the laptop is suspended and I open the lid, it takes the greeter a few seconds to show up. The only thing that is visible is the screen's backlight and a blinking cursor in the upper-left corner.

Steps to Reproduce

1. Suspend laptop
2. Wait for a minute or two
3. Open lid

Expected Behavior

Greeter should show up within 2-3 seconds instead of ~10 seconds, which is the current behavior.

OS Version

6.x (Odin)

Software Version

Latest release (I have run all updates)

Log Output

$ journalctl -b -0 -q | grep lightdm

Jan 28 13:49:47 elementary gsd-color[1460]: failed to set screen _ICC_PROFILE: Failed to open file “/var/lib/lightdm/.local/share/icc/edid-f4c44e0f3e2cc9cf730e801289e573d2.icc”: Permission denied
Jan 28 13:49:51 elementary gsd-color[1460]: failed to connect to device: Failed to connect to missing device /org/freedesktop/ColorManager/devices/xrandr_Chimei_Innolux_Corporation_lightdm_114
Jan 28 13:49:51 elementary gsd-color[1460]: failed to connect to device: Failed to connect to missing device /org/freedesktop/ColorManager/devices/xrandr_Chimei_Innolux_Corporation_lightdm_114
Jan 28 13:54:37 elementary gsd-color[1460]: failed to connect to device: Failed to connect to missing device /org/freedesktop/ColorManager/devices/xrandr_Chimei_Innolux_Corporation_lightdm_114
Jan 28 13:54:37 elementary gsd-color[1460]: failed to connect to device: Failed to connect to missing device /org/freedesktop/ColorManager/devices/xrandr_Chimei_Innolux_Corporation_lightdm_114

Hardware Info

System:    Kernel: 5.13.0-27-generic x86_64 bits: 64 compiler: N/A Desktop: Pantheon Distro: elementary OS 6.1 Jólnir 
Machine:   Type: Laptop System: LENOVO product: 82A1 v: Yoga Slim 7 14IIL05 serial: <filter> 
           Mobo: LENOVO model: LNVNB161216 v: SDK0J40709 WIN serial: <filter> UEFI: LENOVO v: DHCN32WW date: 05/27/2021 
Battery:   ID-1: BAT1 charge: 31.2 Wh condition: 52.4/60.7 Wh (86%) model: Celxpert L19C4PF4 status: Unknown 
CPU:       Topology: Quad Core model: Intel Core i7-1065G7 bits: 64 type: MT MCP arch: Ice Lake rev: 5 L2 cache: 8192 KiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 23961 
           Speed: 832 MHz min/max: 400/3900 MHz Core speeds (MHz): 1: 1300 2: 1300 3: 1301 4: 1302 5: 1139 6: 1281 7: 1200 
           8: 1208 
Graphics:  Device-1: Intel Iris Plus Graphics G7 vendor: Lenovo driver: i915 v: kernel bus ID: 00:02.0 
           Device-2: NVIDIA GP107M [GeForce MX350] vendor: Lenovo driver: N/A bus ID: 30:00.0 
           Display: x11 server: X.Org 1.20.13 driver: modesetting unloaded: fbdev,vesa resolution: 1920x1080~60Hz 
           OpenGL: renderer: Mesa Intel Iris Plus Graphics (ICL GT2) v: 4.6 Mesa 21.0.3 direct render: Yes 
Audio:     Device-1: Intel Smart Sound Audio vendor: Lenovo driver: sof-audio-pci-intel-icl bus ID: 00:1f.3 
           Sound Server: ALSA v: k5.13.0-27-generic 
Network:   Device-1: Intel Killer Wi-Fi 6 AX1650i 160MHz Wireless Network Adapter driver: iwlwifi v: kernel port: 6000 
           bus ID: 00:14.3 
           IF: wlp0s20f3 state: up mac: <filter> 
Drives:    Local Storage: total: 476.94 GiB used: 35.18 GiB (7.4%) 
           ID-1: /dev/nvme0n1 vendor: Western Digital model: PC SN730 SDBPNTY-512G-1101 size: 476.94 GiB 
Partition: ID-1: / size: 463.50 GiB used: 35.05 GiB (7.6%) fs: ext4 dev: /dev/dm-1 
           ID-2: /boot size: 945.2 MiB used: 116.4 MiB (12.3%) fs: ext4 dev: /dev/nvme0n1p2 
           ID-3: swap-1 size: 3.80 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/dm-2 
Sensors:   System Temperatures: cpu: 44.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Info:      Processes: 337 Uptime: 54m Memory: 15.37 GiB used: 1.80 GiB (11.7%) Init: systemd runlevel: 5 Compilers: gcc: N/A 
           Shell: bash v: 5.0.17 inxi: 3.0.38

[ghost]

Update: After running sudo apt install --reinstall lightdm io.elementary.greeter and rebooting, the greeter shows up a lot quicker (2-3s) than before (5-10s). I guess there was some conflict causing that. Still, the elementary greeter is way slower to show up than Gnome's which shows up almost instantly after waking up from suspend. I won't close this myself as I hope for someone to look into it and try to improve its performance.

Thank you guys for your hard work and this great distribution!

[o-alquimista]

Your workaround didn't make a difference here. It's a Dell laptop with Intel graphics.

There are many other bug reports like this.

[ghost]

What I've done wasn't really a workaround, but for some reason it worked. I thought that I had meddled with some config files and that replacing them with their original version would fix the issue, and although it did fix it for me, I switched distros very shortly after so yeah.