About 30 min into the ride the screen fades to white, before coming back to full colour. The duration it stays white seemed to get longer as the ride went on. At around the hour mark it stayed full white and didn’t return forcing me to exit the ride. (in this case jut before the peak on L’Etape Stage 1!)
Screen fade is only occurring during Zwift sessions. General computer activity is not resulting in white screen fade.
The uploaded files are from the restarted Zwift session showing progression from beginning to fade, deep fade, then recovering … before repeating…
I occasionally use my MacBook instead of AppleTV 4K, most recently was the day before yesterday for about 1.5hrs.
My MacBook is an early 2015 MacBook Pro running Catalina 10.15.5. I have the i5 and integrated Iris graphics only (no AMD vid card). I also have a lower spec CPU, 2.9 GHz i5. Zwift runs fine on my MacBook Pro w/out any issues. Your hardware is better, it’s not “too old”.
I would venture that it video card related. A couple suggestions:
Try a lower resolution in Zwift.
Are you running on battery power? If so, it might be switching from the AMD to the integrated mid Zwift and causing a problem. You can disable the energy saver pref which will disable the integrated no matter what.
Not 100% sure, but I believe you can disable the AMD. If so, it might be worth trying to see if the integrated graphics chip results in the same issue.
Thx for the quick response.
Not on battery power, so the saver should not be an issue.
This has only started over the last month or so - prior to that no problems.
Agree that it seems to be related to the graphics card; either something at the Zwift end changing the graphic intensity or card itself going off.
Will try the lower resolution next ride.
Thx
Could your MacBook graphics card be overheating? I am running a triple fan cooling stand under my 2012 MacBook pro with a Nvidia GT 650 at 1080p. I no longer find it hot to the touch after a Zwift session.
Reducing the resolution to 720p seemed to work. 80 min session, no additional fan, no screen whiteout. Lower resolution seemed to take the pressure off the graphics card and perhaps reduced the temp. Thx