Also affects me on both Linux Mint XFCE 18 and Fresh install of Xubuntu
Yakkety.
This prevents me using either my main monitor or my new graphics card.
As it's been hanging around a while and can cause major problems I think it
should be assigned a high priority.
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You received this bug
** Changed in: xfce4-panel (Ubuntu)
Status: Invalid => Confirmed
** Changed in: pidgin (Ubuntu)
Status: Invalid => Confirmed
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https://bugs.launchpad.net/bugs/1015784
Identical bug.
Flashing can only be stopped by closing pidgin. Doesn't flash on restart.
The unstoppable flashing seems to begin after topic activity after resuming
from suspend.
Xubuntu 18.04
Pidgin 2.12.0 (libpurple 2.12.0)
RX 480 using mesa via padoka PPA (but I can't see why this would