Mouse cursor jumping

Peer support for Air Manager desktop users

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bcw2235
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Joined: Mon Aug 16, 2021 7:15 pm

Re: Mouse cursor jumping

#11 Post by bcw2235 »

Tetrachromat wrote: Tue Aug 17, 2021 2:51 pm ATEN CS1794 4-port HDMI KVM switch here. There are no drivers or intermediate software to install for the switch. Also on Windows 10 and regularly updated to latest builds and drivers.

I had the switch in use for several years without problems. The issues appeared only after I installed Air Manager. And it only surfaced when AirManager was running.

The main issue was the mouse input lagging, resulting in a "jumping cursor". But the jumping was always in the direction of the mouse movements. Not jumping around wildly. A secondary issues was that keyboard input was lagging but also repeating sporadically the last entry multiple times.

Whenever AirManager was shut down the issues disappeared. Also no other application on that PC shows that behaviour. So one could assume that AirManager handles keyboard and mouse input differently from other applications. Maybe an issue with Java which is used for the AirManager GUI (Note: the issue remains with the BETA builds, although they moved up to JAVA 16).

I did update the switch with a more current firmware available from ATEN website, but it did not solve the issue. I have now removed the switch completely. using separate keyboard and mouse for PC and laptop. A bit awkward to shuffle around keyboard and mouse, but al least it works. I will try out a different make I can probably borrow from a friend. It's a LINDY dual port HDMI switch.

If anybody is using a KVM switch without this issue in AirManager, please let me know the make and model.

Paul
Thanks for the response. Yeah, my cursor is not experiencing the delay like yours. It's actually randomly jumping in different directions. Also, there seems to be some pattern where it jumps to the same few locations. Most common seems to be the top right corner of the screen. I'll check the java version installed and see if there is a needed update.

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Ralph
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Re: Mouse cursor jumping

#12 Post by Ralph »

We use OpenJDK, so updating won't make a difference.

Tetrachromat
Posts: 236
Joined: Sun Feb 14, 2021 6:55 pm

Re: Mouse cursor jumping

#13 Post by Tetrachromat »

bcw2235 wrote: Tue Aug 17, 2021 3:51 pm Thanks for the response. Yeah, my cursor is not experiencing the delay like yours. It's actually randomly jumping in different directions. Also, there seems to be some pattern where it jumps to the same few locations. Most common seems to be the top right corner of the screen. I'll check the java version installed and see if there is a needed update.
Yes, looks like a different issue on your side.

What is the make and model of your KVM switch?

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jph
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Re: Mouse cursor jumping

#14 Post by jph »

You are using a USB mouse yeah ?. I know a lot of mobos still support serial mice especially for gamers who sometimes prefer them but they are uncommon and rarely used. Sometimes a USB specialist mouse will also set up a com device as a serial mouse, again though, this is unusual.
In device manager, under 'Ports and LPT', are there any items listed at all ? - note, if no serial or parallel items are attached the ports and lpt section in device manager will not be shown.
Also, you should have an entry under 'mice and pointing devices' in device manager for non serial units.
You can also select the option in device manager - under view - show hidden devices - and see all the previously installed drivers used (these can be uninstalled if needed by right clicking on them and selecting uninstall device, however, it needs doing selectively . Mice are cheap and trying another is worth a shot, but I would be surprised if that solved the issue if it only occurs with AM.
If the mouse is usb, are you using ANY serial devices on the system ?

Best of luck.
Joe. CISSP, MSc.

bcw2235
Posts: 7
Joined: Mon Aug 16, 2021 7:15 pm

Re: Mouse cursor jumping

#15 Post by bcw2235 »

So I bought a new keyboard and mouse set and the issue is gone. I'm also using my KVM without any issues as well. Thanks everyone!

Tetrachromat
Posts: 236
Joined: Sun Feb 14, 2021 6:55 pm

Re: Mouse cursor jumping

#16 Post by Tetrachromat »

Some progress here as well. The mouse cursor lagging disappeared completetly after i configured my KVM switch to not use "mouse emulation". I don't know what feature this is, but it is on by default. After disabling it mouse operates as expected. Just RTFM! :oops:

The keyboard key repetition issue is still present. And there is no configuration item for that. So I connected a wireless keyboard/mouse combo via the KVM USB port. This does not show the key repetition issue.

BTW: There is a serial port listed in my device manager. It is the port 'USB Serial CH340 (COM3)' that is used to connect the Arduino MEGA.

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jph
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Re: Mouse cursor jumping

#17 Post by jph »

Tetrachromat wrote: Wed Aug 18, 2021 8:57 pm Some progress here as well. The mouse cursor lagging disappeared completetly after i configured my KVM switch to not use "mouse emulation". I don't know what feature this is, but it is on by default. After disabling it mouse operates as expected. Just RTFM! :oops:

The keyboard key repetition issue is still present. And there is no configuration item for that. So I connected a wireless keyboard/mouse combo via the KVM USB port. This does not show the key repetition issue.

BTW: There is a serial port listed in my device manager. It is the port 'USB Serial CH340 (COM3)' that is used to connect the Arduino MEGA.
Ah, 'H.E' (hardware emulation) on KVM units is an old fudge technology so best disabled on later systems - as you have just found out ! ;) . Instead of using the actual mouse hardware / driver that the machine(s) should see, the box sends a fudged 'generic' mouse 'emulated' mouse input to the PC(s). This was supposed to keep the pc from dropping the mouse connection and not re-initialising. I haven't seen this 'feature' for 15 years or possibly 20 years !. We used to use it with NT Server and NT Workstation V3.51 and V4.
Your keyboard is most likely doing the same - an emulated fudged device based on an ancient IBM 102 standard.
The combo will almost certainly (with emulation disabled) send the ACTUAL hardware info hence should work - as it seems to be doing.
You could also try connecting a keyboard and mouse via a usb hub to the usb input on the KVM if you wanted to ? - worth testing - although i have to admit the wireless unit is great. I use a neat little Perixx wireless mouse / keyboard combo and it is superb as the keyboard is laptop size but with sensible keys but please note - it lacks the numeric keypad but I never use this anyway - the reason for the lack of keypad is simply for size. The keyboard batteries last about 2 or 3 years or more as the device is only active when a key is pressed. The mouse though, it can use a pair of triple A batteries in 6 months due to the optical sensor but you can turn it off with a small click switch underneath at the end of the session, I just keep forgetting so change the batteries once a year - a CBA issue (can't be arsed). - ps LIDL batteries are amazing so I always have a stack in stock. Perixx are super Keyboard / Mouse / wired or wireless units if anyone is looking for a really cost effective bullet proof wireless unit / combo - full size or very small footprint unit at sensible prices.
The CH340 on the com port is absolutely 100% fine and is, in your case,, indeed for the MEGA. The CH340 is a superb Chinese made alternative to the FTDI and similar USB to serial converters. A rock solid device.

I am looking for a nice KVM myself but don't need it just yet. I am looking at the software based Stardock solution - https://www.stardock.com/products/multiplicity/ it would be the 9 PC KVM version at around 45 Euro. (the cheaper version is only a KM. not a KVM). I use Stardock products everyday - Start 8 on my laptop and Stardock Start 10 on all my win 10 PCs. I also use Stardock Fences on my win 10 machines. I must say, without start 8 and start 10, I would throw a win 10 box out of the window and into a skip due to the horrendous UI. Glad you both got sorted.
Joe.
Joe. CISSP, MSc.

danielogg
Posts: 14
Joined: Mon Aug 30, 2021 8:06 am

Re: Mouse cursor jumping

#18 Post by danielogg »

Hello guys!

I am having a similar issue (as reported here: https://siminnovations.com/forums/viewt ... f=7&t=5248) but instead of random usb inputs from mouse or keyboard, mine happens from the yoke I use. It gets randomly the same inputs as if I were pressing a button.
It only happens with Air Manager 4 functioning. Maybe it is a new glitch? We are 3 people already reporting the same similar issue (with different gadgets) in the same week.

I can't just buy a new yoke as it costs a month salary but I would really enjoy being able to use air manager.

I suppose it might be a new glitch because there are no reports from before and now this week 3 of us.

Are you guys using Air Manager with MSFS?

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