Please always report the versions of GTK when making reports like this (menu->help->debug messages near the top). For both the Gnome and Mate systems.

@FabianInostroza which system is that for? the Gnome or the Mate and whats the versions for the other?

And what evrsion of the OS and is it Wayland or X11?

Ok, since you had two systems one working and one not the first idea was to find what was different, simply having a different desktop would normally be considered to have no effect.

But in the absence of any other differences I guess its Gnome's fault, maybe its causing GTK to do something in the background, like enumerate filesystem contents in case you open the file chooser or something similar.

Did you check for anything else using CPU in the Gnome case?

I have vague memories of reports a version of GTK did bad things like blocking in the main thread, but I can't find it just now, and I don't know why it would depend on the desktop.

@b4n Yes, the system monitor shows 0% for geany.

Compiled with that line commented out and doesn't affect.

Other difference I have noticed while running geany between the two setups is that the terminal prompt of geany in GNOME doesn't show colors, both systems have libvte9. I don't think this is related to the main problem.

I uploaded a video showing the delays I'm talking about, I hope you can hear the mouse clicks: https://drive.google.com/file/d/0B_AKPUOZlOCrSUhsTmJFZ3p3NnhvOHJwZzRFalRyVGp...

It is like using geany through a slow ssh connection.

@NathanaelLane have you checked with all plugins disabled? And with a new config `geany -c /tmp/does_not_exist` ? What language file are you editing? How big is it?

The problem is that it doesn't appear to happen to any of the Geany devs, so its hard to say whats the problem.

@FabianInostroza what are your exact versions (in help->debug messages) @NathanaelLane is on GTK3 too.

Well, unless somebody else using GTK 3.22.30 has the problem don't know what it is.

@NathanaelLane not really, it looks like some interaction between Gnome and GTK thats possibly delaying user interaction notifications, or is delaying update notifications. Maybe some Gnome/GTK spurt will have a suggestion what to look at.

@toxpal, see second post on this thread.

I wonder if this is #807 still happening?

Question to everybody who sees the problem, are you running Geany in a full screen window (you know + in the window decoration of sensible DEs)? If you are then see if it occurs when the window is not full screen and report the results.

Using geany **NOT** in full screen, and the issue still remains - it often takes geany some time to update displayed content when some text is typed/copied/scrolled, etc.

P.S. Sometimes (like 1 time out of 20), even when working with very small file (several lines of PHP code), it takes Geany 1 second to update cursor position after pressing TAB or SPACE buttons on keyboard. It occurs in both fullscreen and not fullscreen modes.

I wonder if this is #807 still happening?

@elextr: I have never had such issues at home on my Ubuntu machine.

But at work I often have the issue that geany doesn't seem to react right after the start. But the window title etc. is updated if I click on a document tab. But the active tab is not changing. Then I close and re-start geany and everything is fine. So if this is the problem you mean, then... - it only occurs to me on windows - it only occurs on the first start of geany after booting my PC

When this glitch is happening, is there any output on the console? (Start Geany with `-v` option)

Another thing would be to run Geany with GDB and see if fires off a lot of threads (GTK+ does this sometimes and it can block, I guess when they're joined). Additionally, in GDB, if you're fast enough and can interrupt it using <kbd>Ctrl</kbd>+<kbd>c</kbd> while it's stuck, the resulting backtrace would probably be useful to see what's it's doing.

A final thing to try might be to run Geany with [GtkInspector](https://wiki.gnome.org/Projects/GTK%2B/Inspector) and see if anything looks fishy with the signals as @elextr mentions.

@sej7278 well since Geany works on Wayland, but not on X11, and since its entirely GTK that talks to those, its something to do with GTK, especially if Debian has not updated Geany. But unless

1. it happens to one of the developers

2. somebody finds a reproducer

3. somebody finds the cause

there is not much we can do.

PS You could try compiling Geany from git, it has updated Scintilla which might fix it although I don't remember any significant changes in the GTK backend.

this is still happening to me, do you have any idea how to debug it so i could report it to whomever as it doesn't really seem to be a geany issue?

i've tried `strace geany -p` and noticed when the pause happens e.g. change tabs a few times; there's lots of calls to `gettimeofday()`:

``` clock_gettime(CLOCK_MONOTONIC, {tv_sec=308651, tv_nsec=541611046}) = 0 recvmsg(3, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=3, events=POLLIN}, {fd=4, events=POLLIN}, {fd=5, events=POLLIN}, {fd=10, events=POLLIN|POLLPRI}], 4, 0) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {tv_sec=308651, tv_nsec=541810024}) = 0 gettimeofday({tv_sec=1602928536, tv_usec=187037}, NULL) = 0 gettimeofday({tv_sec=1602928536, tv_usec=187220}, NULL) = 0 gettimeofday({tv_sec=1602928536, tv_usec=187499}, NULL) = 0 gettimeofday({tv_sec=1602928536, tv_usec=187681}, NULL) = 0 gettimeofday({tv_sec=1602928536, tv_usec=187857}, NULL) = 0 gettimeofday({tv_sec=1602928536, tv_usec=188045}, NULL) = 0 gettimeofday({tv_sec=1602928536, tv_usec=188198}, NULL) = 0 gettimeofday({tv_sec=1602928536, tv_usec=190056}, NULL) = 0 gettimeofday({tv_sec=1602928536, tv_usec=190358}, NULL) = 0 gettimeofday({tv_sec=1602928536, tv_usec=190877}, NULL) = 0 gettimeofday({tv_sec=1602928536, tv_usec=191167}, NULL) = 0 gettimeofday({tv_sec=1602928536, tv_usec=191574}, NULL) = 0 gettimeofday({tv_sec=1602928536, tv_usec=191829}, NULL) = 0 gettimeofday({tv_sec=1602928536, tv_usec=192067}, NULL) = 0 poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}]) writev(3, [{iov_base="\213\7\2\0A\17\340\0016\0\2\0@\17\340\1\213\7\2\0;\17\340\0016\0\2\0:\17\340\1"..., iov_len=16356}, {iov_base=NULL, iov_len=0}, {iov_base="", iov_len=0}], 3) = 16356 recvmsg(3, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable) ```

I wouldn't neccessarily say this is the same as #1787 since that is about updating text within a file, not swapping tabs. I re-checked and swapping tabs at full screen or nearly full screen does not happen here any more, noting that I'm not using the same machine as previously and several OS versions newer too.

@eht16 no, these are all local nvme/ssd files not nfs. i'll do a bit more checking with wayland and see if i can trigger it.

i'm pretty sure it has to be something to do with gnome 3.38 which is trickling into debian sid, but without anything more specific than that - and it appears to only happen to geany - i can't raise any useful bug reports as they'll just blame geany.

@sej7278 which window manager are you using?

Jumping in, but… could you check e.g. downgrading GLib or GTK? It might be a pain to downgrade, but maybe make a custom GLib build and use that might be easy enough. If it's an incompatibility with one of the platform libraries maybe we could try and isolate the change that lead to that and see if we can fix this in Geany (or Scintilla).

Yes, the nightly builds are still built against GTK2 but will switch soon to GTK3 once 1.37 lands in Debian archives and GTK2 compability in Geany itself will be removed in the next version. So, GTK2 is no solution :(.

with geany 2.0.0 on windows 10 i observe that if i don't make any keyboard/mouse input for about 30 seconds the UI becomes unresponsive for a second whenever i make a keyboard input or hover over the toolbar buttons.