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spf=pass (aspmx1.migadu.com: domain of help-guix-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=help-guix-bounces@gnu.org X-Migadu-Spam-Score: -0.46 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=elenq.tech header.s=protonmail header.b=Ph+Fo+oV; dmarc=fail reason="SPF not aligned (relaxed)" header.from=elenq.tech (policy=none); spf=pass (aspmx1.migadu.com: domain of help-guix-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=help-guix-bounces@gnu.org X-Migadu-Queue-Id: 23C79DD7D X-Spam-Score: -0.46 X-Migadu-Scanner: scn0.migadu.com X-TUID: TKIWg8iItniP Hi Andre > I've noticed that on my laptop's built-in screen there's some kind of > weird "delay" going on. For instance, the cursor lags behind after > hitting Space. On my external monitor, there are no issues at all. If > that matters, the built-in screen native resolution is almost 4K. I've > tried to play with the ModeLine settings in the past, but I wasn't able > to solve it. > > I'm wondering if this "TearFree" option sounds like it could solve my > issue. Regardless, I'll give it a try. In my laptop it didn't resolve tearing totally but it reduced it (I think, I made the change recently and I was trained to ignore it :S) > I also took a look at your config, and I noticed the last section > relative to ModemManager. > > I've been playing with DIY keyboards (as you know) and I'm just curious > why exactly ModemManager interferes with USB devices. > > For now I've solved the issue by adding the following udev rule: > > --8<---------------cut here---------------start------------->8--- > SUBSYSTEMS=3D=3D"usb", ATTRS{idVendor}=3D=3D"1b4f", ATTRS{idProduct}=3D= =3D"9205", > TAG+=3D"uaccess", ENV{ID_MM_DEVICE_IGNORE}=3D"1" > --8<---------------cut here---------------end--------------->8--- > > My understand is that MM from "ID_MM_DEVICE_IGNORE" stands for > ModemManager. I'd like to get a deeper understanding of what's going > on. If you can share some pointers, I'd appreciate it. The modem manager basically tries to know if anything you connected is a modem so it sends AT commands to the serial devices right when they are connected. That may interfere with your work. The udev rule you added id more than enough I think. I'm a radical guy so I just removed the modem manager service :)