![]() ![]() Because those folders are kept under wraps, so-to-speak, I doubt if Apple’s QA process covers modifications to the contents. ( /Library/Screen Savers/Default Collections.) Admin privileges are required to modify the contents, and I continue to suspect that a bug in the screen saver engine is exposed when those folders are heavily modified with new content. I continue to have trouble with Cosmos because I added files there. Testing is on-going, however, and isn’t yet comprehensive. I also ran Flurry for several hours without a hiccup. My correspondent ran Flurry for 48 hours. I ran Nature for 12 hours without a problem. The same goes for the suite of specialized, but still built-in screen savers: Aerial, Nature, National Geographic and Cosmos. ![]() Lately, I’ve been corresponding with another 2013 Mac Pro owner, and our initial estimate is that, in 10.13.4, the basic macOS screen savers are now in good shape. Lots of podcasts pushed the Mac’s boundaries without a hitch. Using this technique, in February-March, I achieved 37 days of uptime in macOS 10.13.3. My own workaround was to use Apple Menu > Lock Screen instead. I wrote about this in: “ Adventures With the macOS High Sierra Install.” and in “ More Adventures With the macOS High Sierra Install.” One of the Cosmos screen saver images.Ī look at Apple’s and other discussion forums, reveals that this Mac isn’t the only model with screen saver issues in early versions of High Sierra. Long-duration built-in screen savers would lock up and freeze the display after a few hours. But when I upgraded to High Sierra, a new problem was introduced. The just-out-of-the-blue graphics lockups I’d had with my Mac Pro (which shipped with Mavericks) started in Yosemite and continued in El Capitan. Now using an external display is seamless and transparent in closed-display mode. ![]() Sometimes getting my Mac to use the right resolution was a big bucket of fail, too. Using an external display with my Touch Bar MacBook Pro in closed-display mode was frustrating because the display would go black and resync every few minutes. Our Managing Editor Jeff Gamet reported to me: But there have also been reports of display issues with modern MacBook Pros, external displays, and closed-display mode that went unresolved, even when invoking Apple’s guidelines. Screen saver issues for other Macs have cropped up along the way. Perhaps the most notable, in my experience, has been issues with the AMD D300 FirePros in the 2013 Mac Pro. The lonely, unloved (but awesome) Mac Pro and Apple’s discontinued display. Fix one thing, and another breaks down the road. One of the long standing headaches, it seems, with macOS has been display handling issues. ![]()
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