Describe your issue:
When I edit any block, all of the sudden the unit stops sounding and I see an orange message in the middle of the screen that says “there’s been an issue and you need to reboot the system”
last time this happened, I was at a soundcheck before a gig at a big arena with more than 8000 people attending the concert. We all use IEM and besides the message, my QC made a huge noise blasting everyone’s ears, including mine. Of course, this was not only embarassing to me, but also concerning because I don’t want this to happen in the middle of a performance. Please help. I’m a professional musician and don’t want this to happen to me anymore.
I’m running the latest update. CorOS 2.3.1 I checked yesterday. As far as CPU usage, it is around 51%, so it shouldn’t be overloaded. Honestly, I don’t think the presets are super complicated. some factory ones are far more complicated than the ones I use.
Happened here too, at a gig. took a couple of minutes to reboot. It makes sense when you realise you’re basically running an embedded linux system, when it ties itself into a logical knot a reboot clears it. I have always avoided using a computer on stage for this exact reason, fortunately it hasn’t happened since, it’s a worry for sure. It must be one of the algorithms taking a leap into infinity.
That’s a drag, for sure. Fortunately, I haven’t run into this issue but I’m still using the previous version. I hope it was just a random glitch and you’re problem-free going forward.
I have had the cortex freeze a couple times (fortunately never during a show), and it sometimes it takes a few minutes to reboot. I read somewhere to press and hold the A and H buttons simultaneously for a forced restart. Not sure if that actually works, but it is definitely an issue neural should look into fixing for the next update.
Thank you all for your help. It’s happened more than once, hence my concern. It is a great and powerful unit, but I can’t compromise my job. I will write support to see if they can help me further or give me a solution. I understand intermittent failures are the most difficult to solve, but I need to be sure the gear is solid in order to perform properly.
Freezing and requiring a reboot is not normal or expected behaviour. Contact support.
Some of the big boys - Rabea when opening for Reading headline act, Kiko when touring with Megadeth - would have a second QC for failover if the first had issues. Not an ideal solution for most of us though.
If I was gigging, especially for 8k-strong crowds, I’d definitely have a basic backup pedalboard on hand. I’ve never seen any freezing in my 20 months of QC use, but I’ve also never been in a car crash, yet I always wear a seatbelt.
Hi, I don’t have any gigging experience - I’m just a hobbyist messing around at home - so take this for what it’s worth.
As we all know by now the QC is not grounded by design. It relies on the devices it connects to to complete the grounding loop.
What I’ve found interesting is that the QC is EXTREMELY sensitive to each and every device that connects to it. For example, I use a Boss ES-8 effects switcher to jack into the QC, with the QC connected to my computer via USB. If either the computer or the switcher isn’t grounded properly, the QC freezes. What’s more, both devices have to be powered on before the QC or you risk having it freeze - the order matters.
Now I may have it done properly, everything grounded and powered on in the right order, but that’s not where the QC’s sensitivity stops. I have my ES-8 also connected to another amp. While I also have this amp powered on before turning the QC on, the QC freezes even if I just toggle the stand by switch on the amp.
Given this experience, I wonder if your problem is related. Did you engage or disengage any devices connected to your QC when you experienced the freeze up? Just a thought.
Lol. Again, stability being affected by the power-on order of external devices is not normal or expected behaviour. My QC doesn’t care if the amp is on, the laptop is grounded, the pedals in the loop are powered or not…
That sounds like something in your system is causing power spikes/dropouts. It could be that the QC loses power momentarily because the amp draws too much or something.
I’ve run my QC at many different shows and venues for over 18months, and the only time I had an issue was because I didn’t plug the lead for my power supply in properly. Had absolutely no issues at all otherwise.
You are probably right, although I recall reading a number of issues related to using just the headphones out of the QC. The absence of a connected device to complete the grounding was the problem, iirc.
Power spikes/dropouts being caused is a possibility, although the amp itself was connected to another wall outlet - I don’t think power draw was the problem.
