Have you tried turn the brightness level up and down manually? I just think it might be relate to PWM (Pulse-Width Modulation).How do you like that--replying to yourself!?! But just an update to say that my camera continues to do the same thing of intermittently freezing/locking up requiring that I remove the battery to reboot it and then it resumes like nothing ever happened. Still no special cause except it definitely is NOT associated with high speed shooting or high temperatures.
How did you make out with the sensor replacement? Still stuck/dead pixels? Mine seems to have a few as well... wondering if warranty is even worth it...Wanted to start a thread for legit R5/R6 camera issues or defects, not speculations or complaints/wish lists about the design. Please don't complain about video times or other design wishes here as there are a million threads and sites for that. I'm hoping we can collect actual potential manufacturing defects from people who own the camera in this thread. To start off those I am aware of:
1) I know one poster here cannot get the intervalometer to work no matter what he tried, and was going to send off for repair at Canon's suggestion. EDIT: apparently Ramage below has an answer, remapping focus button causes the issue, Canon is aware and will fix in firmware.
2) For my R5, I have gone night shooting and found several bright red stuck/hot pixels on the sensor that become evident when exposures are set for slow shutter >1s, ISO >800, apertures are F4 or larger. Combining multiple low light exposure settings make them brightest (high ISO + wide apertures + slowest shutters) but any one setting when cranked enough will produce them.
These hot pixels show on both EVF and LCD screen, so is definitely the sensor pixels. A few of them twinkle which is odd, perhaps high ISO NR and exposure preview working together. The stuck pixels do not make it into images, but I have not tested with high ISO NR off or made sure LR or photoshop isn't taking care of them.
For all Canon cameras, cleaning the sensor manually typically remaps or attempts to shut off stuck pixels upon power down, but failed to help at all here. Walked through it again with Canon Service rep just to be thorough, no joy. My R5 also has several lesser spots of dimmer red, green or blue pixels, perhaps 10 defects total.
Canon support has been great as usual, and is taking care of the problem with a warranty repair and shipping. I hear I should bne out of a camera for about a week, no biggie as I have a 5D4 and no jobs or hobby trips planned right now with the awful smoke in the area. Hopefully the next sensor is better- I can deal with a couple dim bad pixels but not so many bright ones, plus over time usually a sensor develops a couple more, so to start with several isn't great. For high MP sensors it is normal to have a few bad pixels eventually, but the two spots of several bright red pixels both myself and Canon agree is not normal for a new camera to have.