corruption/glitch on right click contextual menu, drop down menus with glamor in kwin

Submitted by Barto

Assigned to xf86-video-ati maintainers

Link to original bug (#102384)

Description

Created attachment 133735
xorg log

Hello,

I have a radeon HD4650 Pcie ( chipset RV730 pro ), I use archlinux 64 bits, xf86-video-ati 1:7.9.0-2,

as desktop I use plasma 5 ( kde ), opengGL2 is enabled in kwin for desktop effects,

DRI 3 and glamour are enabled, tearfree is "off", and I have set vsync in kwin to "automatic", I see no tearing, all is ok in videos and 3D games,

my radeon conf file in /etc/X11/xorg.conf.d/

Section "Device"
Identifier "Radeon"
Driver "radeon"
Option "TearFree" "off"
Option "DRI" "3"
Option "AccelMethod" "glamor"
EndSection

my problem : I notice sometimes glitchs, corruption when I do a righ-click ( contextual menu ) and when I use "dropdown menu" ( in dolphin, firefox ), the problem occurs randomly and not often ( 10% of chance to trigger the bug when I do a right click for the contextual menu ),

when the bug occurs I see in the contextual menu a mix of displays ( for example if dolphin is in the background and firefox on top then in the contextual menu I can see a mix of Dolphin/firefox screens, all is mixed together, and sometimes colors blink inside the contextual menu )

if I retry then the bug disapears immediatly and the contextual menu is correctly displayed,

it's a random bug, sometimes this bug will not occur for 2 hours, and when the bugs occurs it will disapear quickly if I re-click with the mouse,

is it a known bug when dri3 and glamour are enabled in kwin/plasma 5 ?

thanks

Attachment 133735, "xorg log":
Xorg.0.log