White zones on screen

[JKBert]

Hello,

I use a old netbook (Lenovo Thinkpad Edge E325) that runs with Radeon graphic adapter (APU E-450) and a Linux Debian distribution (testing). Since last upgrade of Windowmaker (0.95.9-3), I cannot use Windowmaker as a portion of screen is randomly turned in white (from left to right of screen, except dock !). In a first time, I have considered that hardware is faulty, but these white zones only appear when wm is set to Windowmaker. For example, with fvwm, Gnome, xfce or kde, I cannot reproduce this issue.

Debian database : https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1001690

I don't have idea to fix this issue.

Best regards,

JKB

[gryf]

Can you try to downgrade to see which version introduce this behavior?