Fixed by using the intel driver rather than i810.
** Changed in: ubuntu
Status: New = Invalid
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New = Invalid
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[hardy][regression] Extended input devices (wacom) function poorly in portrait
mode
This is definitely an issue on my laptop with intel graphics, but not my
desktop with an nVidia card.
** Also affects: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided
Status: New
** Changed in: ubuntu
Sourcepackagename: xorg = None
** Changed in: wacom-tools (Ubuntu)