On Sun, 23 Aug 2026, Nina Kalinina wrote:
Date: Sun, 23 Aug 2026 16:17:49 +0000
From: Nina Kalinina <[email protected]>
To: [email protected]
Subject: Graphic tablets on NetBSD
Hi,
Thank you for your threads on graphic tablets in the NetBSD mail
list, they ha ve greatly unblocked my ongoing migration to NetBSD
as my main desktop system. I
have a couple of Huions, a couple of Aipteks, and a Wacom, and
I'm very much in terested in getting at least some of them working
under NetBSD with pressure sen sitivity.
Hi Nina, let me sumarize the situation here. You have the usb+hid
layer, drivers like ums that configure the device using the hid
descriptors (and some specific devices issues) and manage the wscons
io, then the wscons X driver.
To properly support pressure, wscons, usb+hid, device drivers (like
ums) and X drivers have to be all modified.
Last year I was in the path to do that, but other problems arose,
crashes related to usb xhci asynchronous transfers (usb audio),
crashes related to intel drm driver, latency problems with audio,
midi, especially using usb devices, &c.
I'm not using netbsd anymore in this use case, let's call it desktop
or workstation if you like, so no real motivation to do that work
right now.
Before last year I added the hid code to support my hunion tablet
modifing the hid report descriptor and then I used openbsd's usbtablet
X driver with some pain configuring xorg to detect it. I made it
work but if the device is detached the system will freeze... I don't
recommend this setup, especially if there is some cat making the
rounds in the zone...
Sorry if I'm not very useful here, I'm fordwarding this to the
tech-kern list, maybe someone is doing some work on this at the
moment (Yorick?) and can help you.
Regards,
adr
