погуглил, нашел проблему, подозреваю что связано с fontcache и fontscale
недостающий лог .xsession-error
((xfce4-menu-plugin:7706): Pango-WARNING **: failed to create cairo scaled font, expect ugly output. the offending font is 'Liberation Sans 10'
(xfce4-menu-plugin:7706): Pango-WARNING **: font_font status is: <unknown error status>
(xfce4-menu-plugin:7706): Pango-WARNING **: scaled_font status is: out of memory
(xfce4-menu-plugin:7706): Pango-WARNING **: shaping failure, expect ugly output. shape-engine='BasicEngineFc', font='Liberation Sans 10'
(xfce4-menu-plugin:7706): Pango-WARNING **: failed to create cairo scaled font, expect ugly output. the offending font is 'Liberation Sans 8.853515625'
(xfce4-menu-plugin:7706): Pango-WARNING **: font_font status is: success
(xfce4-menu-plugin:7706): Pango-WARNING **: scaled_font status is: out of memory
(xfce4-menu-plugin:7706): Pango-WARNING **: shaping failure, expect ugly output. shape-engine='BasicEngineFc', font='Liberation Sans 8.853515625',
(xfce4-session:7664): Pango-WARNING **: failed to create cairo scaled font, expect ugly output. the offending font is 'Liberation Sans 10'
(xfce4-session:7664): Pango-WARNING **: font_font status is: <unknown error status>
(xfce4-session:7664): Pango-WARNING **: scaled_font status is: out of memory
(xfce4-session:7664): Pango-WARNING **: shaping failure, expect ugly output. shape-engine='BasicEngineFc', font='Liberation Sans 10'
(xfce4-session:7664): Pango-WARNING **: failed to create cairo scaled font, expect ugly output. the offending font is 'Liberation Sans 8.853515625'
(xfce4-session:7664): Pango-WARNING **: font_font status is: success
(xfce4-session:7664): Pango-WARNING **: scaled_font status is: out of memory
(xfce4-session:7664): Pango-WARNING **: shaping failure, expect ugly output. shape-engine='BasicEngineFc', font='Liberation Sans 8.853515625'
(xfce4-session:7664): Pango-WARNING **: failed to create cairo scaled font, expect ugly output. the offending font is 'Liberation Sans Bold 11.998046875'
(xfce4-session:7664): Pango-WARNING **: font_font status is: <unknown error status>
(xfce4-session:7664): Pango-WARNING **: scaled_font status is: out of memory
(xfce4-session:7664): Pango-WARNING **: shaping failure, expect ugly output. shape-engine='BasicEngineFc', font='Liberation Sans Bold 11.998046875'
** Message: xfsm-shutdown-helper.c:268: Using HAL to shutdown/reboot the computer.