Package: xserver-xorg-input-wacom Version: 0.8.1.6-1 Severity: normal File: wacom
Hi, This report is a result of an investigation into weird tablet behaviour using Krita and other Qt tablet software: https://bugs.kde.org/show_bug.cgi?id=184485 I'm running most packages from testing, except wacom packages from unstable, and a whole bunch of KDE 4 stuff from experimental. I've been experiencing the symptoms of this problem for some months, but I think I've finally got a handle on its source. The function xf86WcmDevConvert in xf86Wacom.c should be automatically called by the Xorg server to translate from the device-space coordinates to screen coordinates. There exists workaround code in the wacom driver that is disabled when compiled against recent Xorg versions, as older Xorg versions did not automatically call the conversion function (apparently). However, when I run Xorg with Option CommonDBG 6 it's clear that xf86WcmDevConvert is never called. When I compile the package from source (i.e. dpkg-buildpackage), it's clear that the workaround is not being compiled in, either. This only affects core events, and doesn't effect software which does its own conversion from raw tablet data. Presumably, this is why symptoms only appear when using Qt, just because of the (I guess, unusual) way it disects tablet events. Peace, Brendon -- System Information: Debian Release: 5.0 APT prefers testing APT policy: (990, 'testing'), (500, 'unstable'), (102, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 2.6.26-1-amd64 (SMP w/2 CPU cores) Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages xserver-xorg-input-wacom depends on: ii xserver-xorg-core 2:1.4.2-10 Xorg X server - core server xserver-xorg-input-wacom recommends no packages. Versions of packages xserver-xorg-input-wacom suggests: ii wacom-tools 0.8.1.6-1 utilities for Wacom tablet devices -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
