I fly in DCS World using Quad Views with eye tracking, 6 days ago my Quest Link updated to version 76.0.0.452.315 and today is the first time flying in over a week and eye tracking has stopped.
Quad Views log shows "No data received from the eye tracker in 60 seconds! Image quality may be degraded"
Quad Views itself and DCS World can see each other, but nothing is coming out the Pro to indicate eye position.
It's fine in HorizonOS (v74) and eye tranking calibrates and tests fine. Yes dev mode is on in phone app and Quest Link, and eye tracking enabled as it's always been.
The difference is the update to 76.0.0.452.315
I see others have similar issues and have rolled back to QL V74 as a workaround.
I’m having the same issue, went to fly last night and it was only after I had been flying for a while I realised something was off that it wasn’t tracking my eyes. how did you roll back the app? And is it worth doing even if it means doing every time you want to fly
But it soon downloads and upgrades itself back to V76 after a couple of reboots of the PC. Seems the the option not to auto updates is on apps, not the Meta Quest Link program itself.
At the bottom of that same thread is a suggestion to force the headset to V76 which worked for that user, but I haven't got round to trying it for myself.
OK so used adb to sideload the lastest V76 firmware from 'that website' with the very dodgy name as per the Youtube video at the thread linked in my last, and eye tracking is now working with V76 of the Quest Link
Tensorial_Architect on the DCS forums says he/she has raised this with Meta, and a fix (presumably for Meta Quest Link) has been released as of 19 April.
But I don't see that as being available through Library > Updates
Hi, same problem here on our C++ OpenXR application. Eye tracking stopped working when the PC Quest Link updated to v76. Despite the madness of all this (Meta to break the major feature of an equipement that cost 1000€, no QA upfront, no communication about the issue, no possibility to rollback) knowing they are aware of the issue and working on a fix is rather good news.
I switched to PTC, hoping I can get this fix asap, will keep you posted.
Update : with PTC enabled, the PC and MQPro are now both on v76 : - Eye tracking is back - BUT, we lost the ability to know if the eyes are closed or open... (so far we relied on the eye reading confidence)
I still don't understand why Meta owns the right to forcibly break features, as it is almost impossible to stop the updates and each new version is prone to break things on the headset.
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