Re: [Regression] Bug 216885 - HID++ Logitech G903 generates full scroll wheel events with every hi-res tick when attached via USB

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Hi! 

On Mon, 30 Jan 2023, Benjamin Tissoires wrote:

> On Mon, Jan 30, 2023 at 10:56 AM Linux kernel regression tracking
> (Thorsten Leemhuis) <regressions@xxxxxxxxxxxxx> wrote:
> >
> > [ccing a few people that CCed to the bug]
> >
> > Hi, this is your Linux kernel regression tracker.
> >
> > On 05.01.23 09:12, Thorsten Leemhuis wrote:
> > > [...] Quoting from https://bugzilla.kernel.org/show_bug.cgi?id=216885 :
> > >
> > >>  David Roth 2023-01-04 20:37:22 UTC
> > >>
> > >> Created attachment 303526 [details]
> > >> Libinput record with G903 attached directly to USB
> > >>
> > >> Since
> > >> https://lore.kernel.org/linux-input/20220914132146.6435-1-hadess@xxxxxxxxxx/T/#u
> > >> my Logitech G903 has gained hi res support. While normally a good
> > >> thing, it seems that in this case it leads to generating one normal
> > >> REL_WHEEL with each REL_WHEEL_HI_RES event instead of just a couple
> > >> of REL_WHEEL_HI_RES, followed by the standard REL_WHEEL once a
> > >> notch/tick is reached. This leads to overly sensitive scrolling and
> > >> makes the wheel basically useless.
> >
> > Bastien, Benjamin, Jiri, that problem was reported 25 days ago now and
> > there is still no fix in sight afaics (please correct me if I'm wrong)
> > -- and based on the reports I've seen it seem quite a few people are
> > hitting it. Hence please allow me to ask:
> >
> > Wouldn't it be best to revert that change for now (both in mainline and
> > stable of course) and then reapply it once a fix for this problem is
> > available? Or
> 
> Last I heard was that Bastien was actively trying to understand the
> problem. I do have a G903 here but it is lacking the feature the
> reporters have, and so I can not reproduce (there is likely a new
> firmware/model around).
> 
> After a quick search on
> https://support.logi.com/hc/en-us/search#q=G903&s=all it seems that
> there are 2 G903: M-R0081 and M-R0068. I only own the 68 one which
> explains why I can not reproduce it. :(

I have an affected mouse and am willing to try patches/fixes, but my
kernel coding fu is weak. 

Best,
Tobias



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