sudden connection problem

[aartnl]

I have been using laserGBRL with a laser engraver (iKier K1 Pro 1064nm 20W Fiber Laser) for months and it has always worked fine (system Windows 11). Now laserGBRL suddenly can no longer connect to the laser engraver. Lightburn does work.

Start LaserGBRL and click 'connect'.

Error message:

Screenshot LaserGRBL:

Sessionlog:

21-11-2024 21:08:52.123 Program ------- LaserGRBL v7.12.0 [64bit] START -------
21-11-2024 21:08:52.579 OpenGL AUTO->FBO OpenGL 4.5.0 - Build 24.20.100.6026, Intel, Intel(R) UHD Graphics 630
21-11-2024 21:08:59.098 SetStatus Machine status [Connecting]
21-11-2024 21:08:59.102 OpenCom Open COM3 @ 115200 baud Ctrl-X (UsbSerial)
21-11-2024 21:08:59.108 SendImmediate Send Immediate Command [0x18]
21-11-2024 21:08:59.112 CloseCom Close COM3 [CORE]
21-11-2024 21:08:59.115 SetStatus Machine status [Disconnected]

Does anyone have any idea what could be wrong? Thanks in advance!

Regards,
Aart

[khturnings]

Check you are using the right COM port - I have unplugs mine a few times and then plugged it back in and windows in its wisdom had changed COM port number and so I needed to reselect in LaserGrBL

[arkypita]

Try this: menu grbl, LaserGRBL settings, in first page enable both hard and soft reset on connect options.

[aartnl]

Thanks, khtirnings and arkypita! Unfortunately this does not solve the problem

[Newronio]

same problem here, even installing older versions..... also my lightburn works very well

[PhxPhoton]

I was using Laser GRBL without issue, and ran a windows update during a break between burns. After the update, the identical problem at the start of this thread occurred. Switched to an older PC without any windows update, and the same revision of Laser GRBL worked flawlessly. It seems like MS changed something....