Hooking up three monitors, 2 of which are 4k onto Ubuntu is the most frustrating thing I've done with that OS. It just works on OSX though.
Rough spots is a good way to describe it. Overall it works... But not without effort and competence.
Rough spots is a good way to describe it. Overall it works... But not without effort and competence.
Not a big deal, but just thought I'd mention that macOS isn't exactly perfect when it comes to external monitors.
I fixed the issue by using a USB-C to DisplayPort adapter made by a third party. I think that also allowed 4k at 60Hz. I later switched to a multi-port adapter with HDMI out and didn't have this problem.
This problem was horrible noise and loss of connection. People hate dongles for the convenience and price factor, but I think everyone underestimates how it introduces technical and compatibility issues.
I plug in a display port to HDMI adapter to find that it's not the right kind of HDMI and therefore only does 30hz.
http://wok.oblomov.eu/tecnologia/mixed-dpi-x11/
I can't say I've played around with it, but the above seems to indicate that such support is available - but that you might have issues with apps not supporting it (or reporting their DPI properly). There also might be problems with other layers above raw X (?) - but it seems like X itself does support it in some manner?
I once had X supporting two mice on dual monitors (this was a while back - I had a couple of CRT monitors at the time); seeing that made me think X could do almost anything I asked of it (depending on how I "asked").
I honestly got so tired of it I just invested in an Alienware 34" monitor. I haven't had the problem since.
*setup is an Alienware 15 laptop which supports dual monitor out for up to 3 active displays if including the laptop monitor
Windows that go out of bounds and are un-retrievable, permanently glitched window-content rendering when moving between densities, inaccurate mouse positions, desktops that resize to like 320x200 and then to the actual (shrinking every window and mashing all icons together, and breaking the notification area and status bar area in the process), I don't think I've ever had it work out-of-the-box even once on multiple machines and multiple monitors / projectors / etc. Some of this only occurs the first time it learns a new setup, but much of it just keeps happening randomly.
On macs for like the past 5+ years? Almost perfect behavior, for almost every OS version, except on apps that clearly do their own thing (e.g. IntelliJ sometimes shrinks to nothingness, and Steam is just hot garbage much of the time).
I thought it was odd when Apple got a lot of heat for not using X and writing their own thing. It sounds like Apple had evaluated X and determined it wouldn't fit their needs. The same thing happened when things like Wayland started getting written.
This does make things a bit too big on the 24" external display which has nearly the same resolution, but it's not distracting. Some websites I use CTRL-+ and CTRL-- to change the scaling, or rather fine tune it, depending on more than +-20% and the rendering gets wonky. Firefox seems to remember this per site even after a relaunch or reboot.
The biggest problem I have is Bluetooth, my mouse is always disconnecting on Linux, dozens of times per day, but the same laptop+mouse rebooted to Windows 10 - no problem.
Which most people in this forum have plenty of. This isn't a post saying "Linux is ready for everyone on every laptop", it's that it works for this person using a pre-approved set of hardware, just as MacOS is apparently terrible on other hardware.
My exact same problem! How did you solve it ?
I think in the latest kernel developments there have been lots of updates on USB-C and ports in general.
But that’s why I like Linux as well; it gives me the options to use different distributions and environments. It might be messy sometimes, but I’m not locked in to one vendor.