Public bug reported:

I am using a fresh installed Ubuntu 18.04 on an RX 480 and an i5 7600.
3.28.0-0ubuntu1 is running. Normaly, everything runs fine, but lately
when I had some windows open (eclipse, Texmaker, Terminal, Firefox with
Youtube and other windows) the system suddenly was nearly frozen, I
could move the mouse and change active windows by ctrl+tab but not use
the keyboard e.g. for typing into windows or make any actions with the
mouse (e.g. open menues, click on menues, ..).

When I changed the session by Ctrl+Alt+F3 and then killed firefox,
everything worked again. I do not know whether this is a Firefox, a gdm
or a graphics driver issue. Since a program should not be able to make
the desktop crash at all, I suppose its not Firefox and so I post it
here.

/var/log/syslog around the time contains the following (even if it
contains some device removed code, I did not do anything with the cables
and am sure that there isn't a hardware defect with mouse and keyboard):

May  7 17:27:40 reichelt-desktop nautilus[3278]: Called "net usershare info" 
but it failed: Kindprozess »net« konnte nicht ausgeführt werden (No such file 
or directory)
May  7 17:27:53 reichelt-desktop java[11096]: gtk_widget_size_allocate(): 
attempt to allocate widget with width 12 and height -12
May  7 17:27:53 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkScrollbar
May  7 17:27:53 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:27:53 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:27:53 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x4402269 (Run Config)
May  7 17:27:54 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:28:15 reichelt-desktop java[11096]: message repeated 2 times: [ 
gtk_box_gadget_distribute: assertion 'size >= 0' failed in GtkRadioButton]
May  7 17:28:18 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x44002d3 (dissworksp)
May  7 17:28:18 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x4403e58 (Open Resou)
May  7 17:28:20 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x44002d3 (dissworksp)
May  7 17:28:22 reichelt-desktop java[11096]: gtk_widget_size_allocate(): 
attempt to allocate widget with width 12 and height -12
May  7 17:28:22 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkScrollbar
May  7 17:28:22 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:28:22 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:28:22 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x4404745 (Run Config)
May  7 17:28:23 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:28:25 reichelt-desktop java[11096]: message repeated 2 times: [ 
gtk_box_gadget_distribute: assertion 'size >= 0' failed in GtkRadioButton]
May  7 17:28:26 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x4405147 (Confirm La)
May  7 17:28:27 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x4404745 (Run Config)
May  7 17:28:27 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:29:31 reichelt-desktop java[11096]: message repeated 5 times: [ 
gtk_box_gadget_distribute: assertion 'size >= 0' failed in GtkRadioButton]
May  7 17:29:34 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x44002d3 (dissworksp)
May  7 17:29:35 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x4406400 (Open Type )
May  7 17:29:38 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x44002d3 (dissworksp)
May  7 17:29:40 reichelt-desktop java[11096]: gtk_widget_size_allocate(): 
attempt to allocate widget with width 12 and height -12
May  7 17:29:40 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkScrollbar
May  7 17:29:40 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:29:40 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:29:41 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x4406bea (Run Config)
May  7 17:29:41 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:29:43 reichelt-desktop java[11096]: message repeated 2 times: [ 
gtk_box_gadget_distribute: assertion 'size >= 0' failed in GtkRadioButton]
May  7 17:29:44 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x4407502 (Confirm La)
May  7 17:29:45 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x4406bea (Run Config)
May  7 17:29:46 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:29:49 reichelt-desktop java[11096]: message repeated 3 times: [ 
gtk_box_gadget_distribute: assertion 'size >= 0' failed in GtkRadioButton]
May  7 17:30:03 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x44002d3 (dissworksp)
May  7 17:31:16 reichelt-desktop java[11096]: gtk_widget_size_allocate(): 
attempt to allocate widget with width 12 and height -12
May  7 17:31:16 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkScrollbar
May  7 17:31:16 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:31:16 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:31:16 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x440b67e (Run Config)
May  7 17:31:17 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:31:25 reichelt-desktop java[11096]: message repeated 2 times: [ 
gtk_box_gadget_distribute: assertion 'size >= 0' failed in GtkRadioButton]
May  7 17:31:28 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x440c869 (Confirm La)
May  7 17:31:29 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x440b67e (Run Config)
May  7 17:31:29 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:31:29 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:31:32 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x44002d3 (dissworksp)
May  7 17:31:46 reichelt-desktop java[11096]: gtk_widget_size_allocate(): 
attempt to allocate widget with width 12 and height -12
May  7 17:31:46 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkScrollbar
May  7 17:31:46 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:31:46 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:31:46 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x440e143 (Run Config)
May  7 17:31:47 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:31:46 reichelt-desktop java[11096]: gtk_widget_size_allocate(): 
attempt to allocate widget with width 12 and height -12
May  7 17:31:46 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkScrollbar
May  7 17:31:46 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:31:46 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:31:46 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x440e143 (Run Config)
May  7 17:31:47 reichelt-desktop java[11096]: gtk_box_gadget_distribute: 
assertion 'size >= 0' failed in GtkRadioButton
May  7 17:31:52 reichelt-desktop java[11096]: message repeated 2 times: [ 
gtk_box_gadget_distribute: assertion 'size >= 0' failed in GtkRadioButton]
May  7 17:32:10 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x44002d3 (dissworksp)
May  7 17:33:36 reichelt-desktop gvfsd-metadata[2880]: 
g_udev_device_has_property: assertion 'G_UDEV_IS_DEVICE (device)' failed
May  7 17:33:36 reichelt-desktop gvfsd-metadata[2880]: 
g_udev_device_has_property: assertion 'G_UDEV_IS_DEVICE (device)' failed
May  7 17:35:10 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x4412c85 (Extract Lo)
May  7 17:35:10 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x44002d3 (dissworksp)
May  7 17:35:21 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x44137a2 (Extract Lo)
May  7 17:35:23 reichelt-desktop org.gnome.Shell.desktop[2203]: Window manager 
warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 
for 0x44002d3 (dissworksp)
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (**) Option 
"fd" "25"
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) event1 
 - Power Button: device removed
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (**) Option 
"fd" "28"
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) event0 
 - Power Button: device removed
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (**) Option 
"fd" "29"
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) event3 
 - HID 046a:0023: device removed
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (**) Option 
"fd" "30"
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (**) Option 
"fd" "31"
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) event2 
 - Microsoft Basic Optical Mouse: device removed
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (**) Option 
"fd" "30"
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) event4 
 - HID 046a:0023: device removed
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) AIGLX: 
Suspending AIGLX clients for VT switch
May  7 17:36:34 reichelt-desktop systemd[1]: Started Getty on tty3.
May  7 17:36:34 reichelt-desktop kernel: [96354.501280] rfkill: input handler 
enabled
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (EE) 
AMDGPU(0): failed to set mode: Permission denied
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (EE) 
AMDGPU(0): failed to set mode: Permission denied
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
systemd-logind: got pause for 226:0
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
systemd-logind: got pause for 13:68
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
systemd-logind: got pause for 13:65
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
systemd-logind: got pause for 13:67
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
systemd-logind: got pause for 13:66
May  7 17:36:34 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
systemd-logind: got pause for 13:64
May  7 17:36:41 reichelt-desktop systemd[1]: Started Session 34 of user 
reichelt.
May  7 17:36:49 reichelt-desktop sudo: pam_ecryptfs: pam_sm_authenticate: 
/home/reichelt is already mounted
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
systemd-logind: got resume for 226:0
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) AIGLX: 
Resuming AIGLX clients after VT switch
May  7 17:37:11 reichelt-desktop kernel: [96391.191817] rfkill: input handler 
disabled
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (--) 
AMDGPU(0): HDMI max TMDS frequency 320000KHz
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): EDID vendor "ACI", prod id 9466
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Using hsync ranges from config file
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Using vrefresh ranges from config file
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Printing DDC gathered Modelines:
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "1920x1080"x0.0  148.50  1920 2008 2052 2200  1080 1084 
1089 1125 +hsync +vsync (67.5 kHz eP)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "800x600"x0.0   40.00  800 840 968 1056  600 601 605 628 
+hsync +vsync (37.9 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "800x600"x0.0   36.00  800 824 896 1024  600 601 603 625 
+hsync +vsync (35.2 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "640x480"x0.0   31.50  640 656 720 840  480 481 484 500 
-hsync -vsync (37.5 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "640x480"x0.0   31.50  640 664 704 832  480 489 492 520 
-hsync -vsync (37.9 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "640x480"x0.0   30.24  640 704 768 864  480 483 486 525 
-hsync -vsync (35.0 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "640x480"x0.0   25.18  640 656 752 800  480 490 492 525 
-hsync -vsync (31.5 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "720x400"x0.0   28.32  720 738 846 900  400 412 414 449 
-hsync +vsync (31.5 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "1280x1024"x0.0  135.00  1280 1296 1440 1688  1024 1025 
1028 1066 +hsync +vsync (80.0 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "1024x768"x0.0   78.75  1024 1040 1136 1312  768 769 772 
800 +hsync +vsync (60.0 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "1024x768"x0.0   75.00  1024 1048 1184 1328  768 771 777 
806 -hsync -vsync (56.5 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "1024x768"x0.0   65.00  1024 1048 1184 1344  768 771 777 
806 -hsync -vsync (48.4 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "832x624"x0.0   57.28  832 864 928 1152  624 625 628 667 
-hsync -vsync (49.7 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "800x600"x0.0   49.50  800 816 896 1056  600 601 604 625 
+hsync +vsync (46.9 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "800x600"x0.0   50.00  800 856 976 1040  600 637 643 666 
+hsync +vsync (48.1 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "1152x864"x0.0  108.00  1152 1216 1344 1600  864 865 868 
900 +hsync +vsync (67.5 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "1920x1080"x60.0  172.80  1920 2040 2248 2576  1080 1081 
1084 1118 -hsync +vsync (67.1 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "1680x1050"x0.0  119.00  1680 1728 1760 1840  1050 1053 
1059 1080 +hsync -vsync (64.7 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "1600x1200"x0.0  162.00  1600 1664 1856 2160  1200 1201 
1204 1250 +hsync +vsync (75.0 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "1440x900"x0.0   88.75  1440 1488 1520 1600  900 903 909 
926 +hsync -vsync (55.5 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "1400x1050"x0.0  101.00  1400 1448 1480 1560  1050 1053 
1057 1080 +hsync -vsync (64.7 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "1280x1024"x0.0  108.00  1280 1328 1440 1688  1024 1025 
1028 1066 +hsync +vsync (64.0 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
AMDGPU(0): Modeline "1280x960"x0.0  108.00  1280 1376 1488 1800  960 961 964 
1000 +hsync +vsync (60.0 kHz e)
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
systemd-logind: got resume for 13:68
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) event4 
 - HID 046a:0023: is tagged by udev as: Keyboard
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) event4 
 - HID 046a:0023: device is a keyboard
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
systemd-logind: got resume for 13:65
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) event1 
 - Power Button: is tagged by udev as: Keyboard
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) event1 
 - Power Button: device is a keyboard
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
systemd-logind: got resume for 13:67
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) event3 
 - HID 046a:0023: is tagged by udev as: Keyboard
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) event3 
 - HID 046a:0023: device is a keyboard
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
systemd-logind: got resume for 13:66
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) event2 
 - Microsoft Basic Optical Mouse: is tagged by udev as: Mouse
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) event2 
 - Microsoft Basic Optical Mouse: device is a pointer
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) 
systemd-logind: got resume for 13:64
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) event0 
 - Power Button: is tagged by udev as: Keyboard
May  7 17:37:11 reichelt-desktop /usr/lib/gdm3/gdm-x-session[2036]: (II) event0 
 - Power Button: device is a keyboard
May  7 17:37:11 reichelt-desktop gnome-shell[2203]: g_array_unref: assertion 
'array' failed
May  7 17:37:12 reichelt-desktop gnome-shell[2203]: message repeated 5 times: [ 
g_array_unref: assertion 'array' failed]
May  7 17:37:32 reichelt-desktop org.gnome.Shell.desktop[2203]: ###!!! 
[Child][RunMessage] Error: Channel closing: too late to send/recv, messages 
will be lost
May  7 17:37:32 reichelt-desktop org.gnome.Shell.desktop[2203]: ###!!! 
[Child][MessageChannel] Error: 
(msgtype=0x8C0006,name=PWebSocket::Msg_DeleteSelf) Channel closing: too late to 
send/recv, messages will be lost
May  7 17:37:47 reichelt-desktop sudo: pam_ecryptfs: pam_sm_authenticate: 
/home/reichelt is already mounted

** Affects: gdm3 (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1769695

Title:
  Freeze of Surface for 2 Minutes

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