jeff@laptop:~$ ssh workstation

jeff@workstation:~$ sudo journalctl -f _COMM=gdm-x-session
-- Logs begin at sam 2017-01-21 12:20:22 EST. --
fév 02 14:43:55 workstation /usr/libexec/gdm-x-session[1453]: (II) RADEON(0): Modeline "1280x1024"x0.0  108.00  1280 1328 1440 1688  1024 1025 1028 1066 +hsync +vsync (64.0 kHz e)
fév 02 14:43:55 workstation /usr/libexec/gdm-x-session[1453]: (II) RADEON(0): Modeline "1280x720"x60.0   74.48  1280 1336 1472 1664  720 721 724 746 -hsync +vsync (44.8 kHz e)
fév 02 14:43:55 workstation /usr/libexec/gdm-x-session[1453]: (II) RADEON(0): Modeline "1600x900"x60.0  119.00  1600 1696 1864 2128  900 901 904 932 -hsync +vsync (55.9 kHz e)
fév 02 14:43:55 workstation /usr/libexec/gdm-x-session[1453]: (II) RADEON(0): Modeline "1680x1050"x0.0  119.00  1680 1728 1760 1840  1050 1053 1059 1080 +hsync -vsync (64.7 kHz e)
fév 02 14:43:55 workstation /usr/libexec/gdm-x-session[1453]: (II) RADEON(0): Modeline "720x576"x0.0   27.00  720 732 796 864  576 581 586 625 -hsync -vsync (31.2 kHz e)
fév 02 14:43:55 workstation /usr/libexec/gdm-x-session[1453]: (II) RADEON(0): Modeline "1440x576i"x0.0   27.00  1440 1464 1590 1728  576 580 586 625 interlace -hsync -vsync (15.6 kHz e)
fév 02 14:43:55 workstation /usr/libexec/gdm-x-session[1453]: (II) RADEON(0): Modeline "1280x720"x0.0   74.25  1280 1720 1760 1980  720 725 730 750 +hsync +vsync (37.5 kHz e)
fév 02 14:43:55 workstation /usr/libexec/gdm-x-session[1453]: (II) RADEON(0): Modeline "1440x480i"x0.0   27.00  1440 1478 1602 1716  480 488 494 525 interlace -hsync -vsync (15.7 kHz e)
fév 02 14:43:55 workstation /usr/libexec/gdm-x-session[1453]: (II) RADEON(0): Modeline "1920x1080"x0.0   74.25  1920 2558 2602 2750  1080 1084 1089 1125 +hsync +vsync (27.0 kHz e)
fév 02 14:43:55 workstation /usr/libexec/gdm-x-session[1453]: (II) RADEON(0): Modeline "1920x1080i"x0.0   74.25  1920 2448 2492 2640  1080 1084 1094 1125 interlace +hsync +vsync (28.1 kHz e)

(nothing happens when the deadlock occurs)