gnome-screenshotgnome-shellprint-screenscreenshotshortcut-keys
Using Ubuntu 18.04 with GNOME and when I press printscreen it saves the file to my 'Pictures' folder. But when I press ctrl+shift+printscreen to select an area or even ctrl+shift it flashes like it took the shot but isn't saving to anywhere I can find and I searched keywords to find it. Using the screenshot tool with a GUI works fine but I like using shortcuts.
Any idea why they aren't saving using those two keyboard shortcuts?
According this Debian bug report, this bug shows up when NVidia driver v304 is installed. Upgrading to a higher version ought to solve it. The bug report states that v319 is known to fix it, at least. On Arch Linux, I have v340 installed and the bug hasn't shown up.
On my Lenovo Thinkpad ultrabook, the Fn and Ctrl keys are swapped too. I find this super annoying.
What I propose next definitely doesn't answer the question on how to disable the Fn + S "take screenshot" keyboard sequence, but it may help you quit accidentally hitting it all the time by putting your Ctrl key back to where you expect it. Some computers have a setting in their BIOS/UEFI chip which allows swapping the Fn and Ctrl keys. Here is an option to do so, for instance, in my BIOS/UEFI chip config settings:
Note also that Lenovo has intentionally made Fn + S have this behavior. See here (https://support.lenovo.com/us/en/solutions/ht503647) where they show their "Key combinations". Note that Fn + S = the SysRq, or System Request (ie: kernel interrupt) key, which is PrintScreen on Linux. Therefore, on Linux, for these Lenovo computers, Fn + S = SysRq = PrintScreen. Here's Lenovo's full list of Key combinations:
Key combinations:
Fn + B: This key combination has the same function as the Break key on a conventional external keyboard.
Fn + K: This key combination has the same function as the ScrLK or Scroll Lock key on a conventional external keyboard.
Fn + P: This key combination has the same function as the Pause key on a conventional external keyboard.
Fn + S: This key combination has the same function as the SysRq key on a conventional external keyboard.
Fn + 4: Press Fn+4 to put the computer into Sleep mode. To wake up the computer, press any key or the power button.
Fn + Space Bar: If the computer supports keyboard backlight, press Fn+Spacebar to switch between the different keyboard backlight status (off, low, or high).
This may mean these key combinations are hard-coded into Lenovo laptops, which is very bad news for us if so, as either this is in the circuit board layout, chips, or firmware which we can't change, and in which case we have no way to disable this if there is nothing provided by Lenovo to do so in the BIOS.
Best Answer
Here's a screenshot taken from the Ubuntu docs using shift+printscreen.
The point is, if you want the screenshot to be saved to
~/Pictures, don't use ctrl.