Ubuntu login slow in SSD after changing login background to wallpaper

cn flag

I have ubuntu 20.04 installed on ssd along with windows 10 dual boot. After I used this tool to change the login screen background to a wallpaper, it takes much longer for login to complete than before. Before it was almost instantaneous after i entered the password but now it takes 10 seconds; even the windows 10 boots up faster than that. Even after I changed back the background to default purple background, it is still slow. Is there way to make it fast as before

Here's my systemd-analyze and systemd-analyze blame and systemd-analyze critical-chain

systemd-analyze blame

3.835s plymouth-quit-wait.service                           
3.663s ifupdown-pre.service                                 
2.936s dev-sda3.device                                      
2.531s apt-daily-upgrade.service                            
1.205s udisks2.service                                      
 985ms smartmontools.service                                
 844ms dev-loop3.device                                     
 832ms dev-loop5.device                                     
 800ms dev-loop6.device                                     
 794ms dev-loop4.device                                     
 785ms dev-loop8.device                                     
 774ms dev-loop7.device                                     
 690ms dev-loop9.device                                     
 683ms systemd-fsck@dev-disk-by\x2duuid-E416\x2d6416.service
 657ms dev-loop10.device                                    
 602ms dev-loop11.device                                    
 488ms networkd-dispatcher.service                          
 409ms networking.service                                   
 397ms dev-loop0.device                                     
 395ms accounts-daemon.service                              
 375ms snap-vlc-2344.mount                                  
 358ms dev-loop1.device                                     
 352ms dev-loop2.device                                     
 317ms snap-snapd-12398.mount


Startup finished in 3.590s (firmware) + 10.276s (loader) + 2.908s (kernel) + 8.877s (userspace) = 25.652s

systemd-analyze critical-chain @8.845s
└─ @8.845s
  └─smartmontools.service @4.697s +985ms
    └─ @4.648s
      └─ @4.648s
        └─uuidd.socket @4.648s
          └─ @4.644s
            └─snapd.apparmor.service @4.580s +63ms
              └─apparmor.service @4.388s +189ms
                └─ @4.385s
                  └─boot-efi.mount @4.363s +21ms
                    └─systemd-fsck@dev-disk-by\x2duuid-E416\x2d6416.service @3.>
                      └─dev-disk-by\x2duuid-E416\x2d6416.device @3.675s

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.