Squeeze. A problem with VT8623 [Apollo CLE266] integrated CastleRock videocard

[Mark Goldshtein <mark.goldshtein@gmail.com>]

Hello, list!

Would you, please, help to bring to normal functioning a subj's video board?

VGA compatible controller: VIA Technologies, Inc. VT8623 [Apollo
CLE266] integrated CastleRock graphics (rev 03)

#lspci –k did not shows which driver is in use.

X is up fine but GUI screen is garbled after any window move by cursor
and work with mouse is a pain.
dmesg, kernel, messages shows nothing suspictious.
Openchrome driver from repo was deleted, installed, reinstalled etc.
with zero effect.

Appreciate any clue how to fix it. Thanks!

-- 
Sincerely Yours'
Mark Goldshtein