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Old 02-13-2018, 12:35 AM   #1
kenax
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shortcut key gone crazy


hi, i'm a computer geek on windoze and mac and have recently delved into linux. rather enjoying it but sometimes run into bizarre glitches.

my latest is i wanted to create a shortcut key for screenshot. found it under preferences > keyboard, first time dealing with this issue so i just double clicked on the screenshot button, perhaps i slipped with my mouse and pressed something else, but all of a sudden it just went crazy, opening up new window after new window asking me if i want to save the screenshot or copy it to the clipboard. the screen has become quite dark and i can barely see anything. i pressed esc in rapid succession but more of the same windows keep popping up. i can see them littering the system tray, until eventually i guess the system is overloaded and the screen turns black!
so i press a long time on the power button for a hard reset, log back in, but it keeps doing the same!! even tried as an experiment to login as "software rendering". I have linux mint 18.
so after trying this a few times i finally decided to log into the regular user account (i have been using the admin account because i am just learning this and regularly installing software but eventually i'd like to migrate to the regular user account for better security) and surfed the web.
based on some articles i tried the system monitor to right click on the gnome screenshot process, because i saw that it was quickly multiplying, but before i could press kill process the screenshot window popped up and got in my way. same thing when i tried ctrl+alt+t to open up the terminal and quickly type xkill. the screenshot window would pop up in my way before i had a chance to press the last l. is there not some automatic ctrl+alt+delete like there is in windoze which remains over top of this annoyance?

would greatly appreciate your advice, thank you
 
Old 02-13-2018, 12:54 AM   #2
kenax
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update, after reading some more webpages tried ctrl+alt+f2, took me to some full black screen but couldn't do anything because it kept inputting ^@ in the same rapid succession, about twice a second. couldn't figure out how to close that window so had to power off hard reset again.
 
Old 02-13-2018, 02:05 AM   #3
ondoho
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- what distro
- what did you change. show us, exactly. use code tags for code.

Last edited by ondoho; 02-14-2018 at 02:45 AM. Reason: removed "tl;dr"
 
Old 02-13-2018, 04:18 AM   #4
kenax
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did you even read what i wrote? i already said mint 18, i already explained what i did, and that i cannot do anything else. how on earth am i supposed to do tag codes when i cannot even access the terminal or anything else?
 
Old 02-13-2018, 05:14 AM   #5
keefaz
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Are you sure there is no stuck key in your keyboard?
 
Old 02-13-2018, 07:42 AM   #6
rtmistler
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Quote:
Originally Posted by keefaz View Post
Are you sure there is no stuck key in your keyboard?
Either a stuck key, or some form of short circuit due to a spill or other contamination, or maybe just a bad keyboard/connector/wire.

If you can do a live boot of the same or another form of Linux, or boot into another OS that maybe you also have installed, you can rule hardware problems either as valid or invalid.

Last edited by rtmistler; 02-13-2018 at 07:46 AM. Reason: Added thought about characterizing problem
 
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Old 02-13-2018, 10:27 AM   #7
kenax
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i mentioned that i have logged into the regular user account. i opened up libre writer and don't see any stuck key, as i mentioned. like i wrote in the original post, i simply double clicked on the shortcut button for print screen, i noticed that my mouse slipped after that, so perhaps i accidentally pressed some other button in that shortcut key window, but that's it. no spill, no short circuit, it started happening exactly at that point. my latest strategy i think is within the user account to disable or uninstall the gnome keyboard shortcut key feature, and then reinstall in, essentially resetting it, once back in the admin account. but it seems odd that linux would not have some easy built-in feature like ctrl+alt+delete in windows which would popup a task manager to override everything else in order to kill a troublesome process. and i find it odd that this would resume every time i log in after a hard reset.
 
Old 02-13-2018, 10:33 AM   #8
rtmistler
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If I'm reading you correctly, something happened causing what appears to be continued key presses all the time. No matter if you went to a system console using CTRL-ALT-F2.

To me this seems as if there's a stuck key, hardware failure, or something similar. Hence why I recommended you try live booting, or booting into another OS if you can to verify that it is not hardware. Something re-occurring over a reboot, and say also even a power off then power on, does not seem to make any sense in software. Yes I'll grant that a script or startup process which is corrupted may cause things like this, but not to a system console.
 
Old 02-13-2018, 10:34 AM   #9
urbanwks
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I don’t regularly use Mint/Cinnamon(which I assume you’re using since you don’t mention a WM) but stop and think about it for a second before you start disabling and uninstalling things.

The keyboard shortcut you saved is stored somewhere. You set it up in the front end that writes that configuration to a place, probably a config file. Maybe a quick search (or someone more familiar with Mint) can tell you where that is. Edit that file/whatever to remove the binding.
 
Old 02-13-2018, 10:40 AM   #10
rtmistler
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We have a very old shipping computer here at work. Just some legacy system.

The mouse is plugged into the keyboard.

The keyboard is old and one of the legs to angle it up flips back to flat all the time. People pick it up and fix the legs because they don't like typing on a rocking keyboard.

The mouse happens to be plugged into the back side corner of the keyboard.

Many times the mouse (PS/2) interface, get's dislodged.

And then Viola! The mouse doesn't work, or works weirdly.

How many times people swear, complain that we finally need a new shipping computer (Yes! We do!), and then they figure out it's because the mouse cable is half-in/half-out.

(Yes ... whole pile of engineers has some IBM-XT class system doing our shipping!)

Plus the fact that it's so old that the hardware may fail eventually. We already replaced the mouse because the mouse cable got pinched when someone closed the drawer too hard on it.

What if your keyboard is Bluetooth?

What about the USB connector if that is what is used? Can you try a different one?
 
Old 02-13-2018, 10:56 AM   #11
kenax
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okay, this is really annoying, now it is happening to the regular user account and i'm forced to login to the guest account, which unfortunately does not save any settings. fortunately i use google chrome and after signing in, it syncs everything from the clouds, so i can be up and running pretty quickly.

okay, so my intention is to get a shortcut key for printscreen. i go to preferences > keyboard > shortcuts tab, then I believe System, press the arrow key to the left of that to dropdown various options, one of which is print screen and recording. i click on that and it shows various print screen options, like just a window, or a selected area. i click on the simplest one which copies the whole screen and in the bottom half (i believe "keyboard binding" section) of the window it shows Print and below that two rows which say something like "not set", or "available" (available i guess in the sense that i can create my own shortcut key instead of using Print). i right click on the Print and nothing happens, one left click still nothing, double click and the same thing happens (it goes berserk and i can no longer use the user account). so i didn't even slip with my mouse the first time, like i thought. i noticed that the "print" gets replaced by something like 0xdd, cant exactly remember. is there some way i can use the terminal in this guest account to disable this, or like someone mentioned above, to access some script file and edit it?

Last edited by kenax; 02-13-2018 at 10:58 AM.
 
Old 02-13-2018, 11:02 AM   #12
kenax
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several people mention stuck keyboard, how can i test this? i already opened up a doc file and the cursor blinks fine, also terminal window works fine (in the guest account i am now using - since both other accounts have gone berzerk). trying to find the config file to see if i can edit
 
Old 02-13-2018, 11:10 AM   #13
rtmistler
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Quote:
Originally Posted by kenax View Post
several people mention stuck keyboard, how can i test this? i already opened up a doc file and the cursor blinks fine, also terminal window works fine (in the guest account i am now using - since both other accounts have gone berzerk). trying to find the config file to see if i can edit
For me this is what I was looking for, somewhere where it clearly works.

OK, got it. And then it would seem you do not have a stuck keyboard.

What I don't understand is that if it is some keyboard shortcut ... well you're not necessarily using that shortcut when you login as that user. Seems as if something else is messed up. Normally I'd say to become root, and then delete and re-create the user. But it seems as if one of the accounts is root.

Unfortunately it's a mater of circumstance to me.

For instance my setup has root as well as my user. But all my data is on a separate drive. I didn't customize much, so I really could take the pain to quickly re-install, in fact upgrade my version, and not lose much of anything.

For you this may be far more disrupting of a step to consider.

I don't know however, of a standard way to reset a user to defaults, except to delete that user and re-create them.

Meanwhile .. you can't (or shouldn't) do that with root.
 
Old 02-13-2018, 11:17 AM   #14
kenax
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one option i may resort to is to go back to the keyboard shortcut window, press on that one that turned from Print to 0dxx or whatever it was and then press the Remove Shortcut button, if i can manage to do all this in between all the popping up windows before the system freezes agin. but first i'll try something more elegant and see if i can access that config file from within the Guest account.
 
Old 02-13-2018, 11:34 AM   #15
kenax
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since nothing is saved in my Guest account i'll save it here, seems like good advice:
https://askubuntu.com/questions/1762...oard-shortcuts

but i can't seem to follow it while in the Guest account. will try some experiments not but if i manage to get it working again, i guess i should regularly work in a regular user account and not the root/admin account, precisely so that i can resolve issue in the admin account? or perhaps set up some boot disk so i can make repairs like this externally from a usb?
 
  


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