Device notifier in system tray crashes/freezes plasmashell

I have a weird issue on my Lenovo Y50-70 running openSUSE 42.3. That is, when device notifier for system tray is enabled, it constantly crashes (i.e. panel freezes, clock is not updating, start/application menu does not open, etc.) I can switch between active windows with Alt+Tab. I can also start new application from krunner (Alt+F2 still works). If i do

killall plasmashell && kstart plasmashell

, it works fine for a couple of minutes and freezes again. If i disable device notifier - problem goes away.

I was running openSUSE 42.3 (now running TW) on Dell XPS 15 (9550) and never had this issue. This makes me thing there is something specific about Lenovo Y50-70. Anyone got ideas?

Try creating a new user, login as that user and see if the problem exists for that user. If so, it’s a system issue needing further investigation, if not the culprit is in your homedir.

Hi, It’s a good Idea, but no. Even with a new user account, as soon as USB thumb drive is plugged in (i.e. device notifier engaged), the plasmashell freezes.

Open a terminal window, and do

dmesg -w

, then plug in a USB stick and look at the messages in the terminal window.

OK, here’s the output from

dmseg -w
  740.628886] usb 1-9: new high-speed USB device number 4 using xhci_hcd  740.758512] usb 1-9: New USB device found, idVendor=0951, idProduct=1666                                                                                                                                                                                                    
  740.758515] usb 1-9: New USB device strings: Mfr=1, Product=2, SerialNumber=3                                                                                                                                                                                               
  740.758516] usb 1-9: Product: DataTraveler 3.0                                                                                                                                                                                                                              
  740.758516] usb 1-9: Manufacturer: Kingston                                                                                                                                                                                                                                 
  740.758517] usb 1-9: SerialNumber: 60A44C3FAC1CBFA0C96B0064                                                                                                                                                                                                                 
  740.881503] usb-storage 1-9:1.0: USB Mass Storage device detected                                                                                                                                                                                                           
  740.881564] scsi host5: usb-storage 1-9:1.0                                                                                                                                                                                                                                 
  740.881632] usbcore: registered new interface driver usb-storage                                                                                                                                                                                                            
  740.901264] usbcore: registered new interface driver uas                                                                                                                                                                                                                    
  741.881896] scsi 5:0:0:0: Direct-Access     Kingston DataTraveler 3.0 PMAP PQ: 0 ANSI: 6                                                                                                                                                                                    
  741.882122] sd 5:0:0:0: Attached scsi generic sg1 type 0                                                                                                                                                                                                                    
  741.882266] sd 5:0:0:0: [sdb] 30277632 512-byte logical blocks: (15.5 GB/14.4 GiB)                                                                                                                                                                                          
  741.882483] sd 5:0:0:0: [sdb] Write Protect is off                                                                                                                                                                                                                          
  741.882485] sd 5:0:0:0: [sdb] Mode Sense: 45 00 00 00                                                                                                                                                                                                                       
  741.882681] sd 5:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA                                                                                                                                                                        
  743.377635]  sdb: sdb1 sdb2                                                                                                                                                                                                                                                 
  743.378810] sd 5:0:0:0: [sdb] Attached SCSI removable disk                                                                                                                                                                                                                  
  743.540438] EXT4-fs (sdb2): mounted filesystem with ordered data mode. Opts: (null) 

I wasn’t clear enough, I meant the output at the moment plasmashell freezes.

Sure, here is the output with Device Notifier enabled

  808.390505] sdb: detected capacity change from 15502147584 to 0  813.493330] usb 1-9: USB disconnect, device number 4
  860.056798] usb 1-9: new high-speed USB device number 5 using xhci_hcd
  860.186440] usb 1-9: New USB device found, idVendor=0951, idProduct=1666
  860.186443] usb 1-9: New USB device strings: Mfr=1, Product=2, SerialNumber=3
  860.186444] usb 1-9: Product: DataTraveler 3.0
  860.186445] usb 1-9: Manufacturer: Kingston
  860.186446] usb 1-9: SerialNumber: 60A44C3FAC1CBFA0C96B0064
  860.186889] usb-storage 1-9:1.0: USB Mass Storage device detected
  860.186974] scsi host5: usb-storage 1-9:1.0
  861.185470] scsi 5:0:0:0: Direct-Access     Kingston DataTraveler 3.0 PMAP PQ: 0 ANSI: 6
  861.185647] sd 5:0:0:0: Attached scsi generic sg1 type 0
  861.185763] sd 5:0:0:0: [sdb] 30277632 512-byte logical blocks: (15.5 GB/14.4 GiB)
  861.185952] sd 5:0:0:0: [sdb] Write Protect is off
  861.185953] sd 5:0:0:0: [sdb] Mode Sense: 45 00 00 00
  861.186145] sd 5:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
  862.681055]  sdb: sdb1 sdb2
  862.682004] sd 5:0:0:0: [sdb] Attached SCSI removable disk
  862.836894] EXT4-fs (sdb2): mounted filesystem with ordered data mode. Opts: (null)
  863.033713] FS-Cache: Loaded
  863.048044] Key type dns_resolver registered
  863.080407] FS-Cache: Netfs 'cifs' registered for caching
  863.080433] Key type cifs.spnego registered
  863.080442] Key type cifs.idmap registered
  873.101522] CIFS VFS: Error connecting to socket. Aborting operation.
  873.101720] CIFS VFS: cifs_mount failed w/return code = -115
  883.142070] CIFS VFS: Error connecting to socket. Aborting operation.
  883.142250] CIFS VFS: cifs_mount failed w/return code = -115
  893.158566] CIFS VFS: Error connecting to socket. Aborting operation.
  893.158641] CIFS VFS: cifs_mount failed w/return code = -115
  903.175188] CIFS VFS: Error connecting to socket. Aborting operation.
  903.175392] CIFS VFS: cifs_mount failed w/return code = -115
  913.231746] CIFS VFS: Error connecting to socket. Aborting operation.
  913.231857] CIFS VFS: cifs_mount failed w/return code = -115
  914.823463] userif-2: sent link down event.
  914.823465] userif-2: sent link up event.
  917.857247] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=d0:7e:35:d4:44:4b:5c:a3:9d:69:fc:36:08:00 SRC=192.168..XX.YY DST=192.168.XX.YY LEN=362 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=57725 DPT=51883 LEN=342 
  918.864071] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=d0:7e:35:d4:44:4b:5c:a3:9d:69:fc:36:08:00 SRC=192.168.XX.YY DST=192.168.XX.YY LEN=362 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=51837 DPT=51883 LEN=342 
  919.858334] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=d0:7e:35:d4:44:4b:5c:a3:9d:69:fc:36:08:00 SRC=192.168..XX.YY DST=192.168.XX.YY LEN=362 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=54300 DPT=51883 LEN=342 
  920.859575] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=d0:7e:35:d4:44:4b:5c:a3:9d:69:fc:36:08:00 SRC=192.168.XX.YY DST=192.168.XX.YY LEN=362 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=39283 DPT=51883 LEN=342 
  923.244314] CIFS VFS: Error connecting to socket. Aborting operation.
  923.244508] CIFS VFS: cifs_mount failed w/return code = -115
  933.412910] CIFS VFS: Error connecting to socket. Aborting operation.
  933.413017] CIFS VFS: cifs_mount failed w/return code = -115
  943.425481] CIFS VFS: Error connecting to socket. Aborting operation.
  943.425681] CIFS VFS: cifs_mount failed w/return code = -115
  953.454071] CIFS VFS: Error connecting to socket. Aborting operation.
  953.454270] CIFS VFS: cifs_mount failed w/return code = -115
  963.462662] CIFS VFS: Error connecting to socket. Aborting operation.
  963.462773] CIFS VFS: cifs_mount failed w/return code = -115
  973.547275] CIFS VFS: Error connecting to socket. Aborting operation.
  973.547474] CIFS VFS: cifs_mount failed w/return code = -115
  983.559837] CIFS VFS: Error connecting to socket. Aborting operation.
  983.560013] CIFS VFS: cifs_mount failed w/return code = -115

CIFS related messages are probably because I have couple of network mounts at work, but I’m at home at the moment.

This is interesting. I have disabled SMB shares (I used to mount them through fstab) and enabled device notifier. Plasmashell hasn’t frozen yet.

I remember that having SMB shares on devices list (left side) in Dolphin would severely slow down save dialogue windows from applications like Firefox and LibreOffice. Is there some long going SMB support issue?