I've done a NVRAM reset like described here: https://discussions.apple.com/thread/251248169
Since then no more blue lines,it does get rather hot at times.
Since then no more blue lines,it does get rather hot at times.
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Sudden graphics corruption, 16" Macbook Pro?
- Thread starter dingobiatch
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I heard my 16 inch (£2399 entry model) chime last night, and it had restarted due to a kernel panic. Ive been waking up to the machine being very hot and unresponsive, sometimes with the fans on full trying to cool it. No graphics corruption as yet, but this is all very concerning. I sent the report to Apple last night. I just hope they fix it because the machine is going to end up melting itself.
I unchecked power nap as people suggest its possibly causing issues.
I unchecked power nap as people suggest its possibly causing issues.
Yes it happened to me after I updated to 10.15.4 as well.
(MBP16, AMD Radeon Pro 5500M 8GB, Catalina 10.15.4)
First to Chrome, then WhatsApp. Restarting solved the problem every time.
But my MBP16 does boot into total blackness like once a week, and I'd have to option+command+P+R and restart it.
PS: the blur on the left was done by myself for privacy.
(MBP16, AMD Radeon Pro 5500M 8GB, Catalina 10.15.4)
First to Chrome, then WhatsApp. Restarting solved the problem every time.
But my MBP16 does boot into total blackness like once a week, and I'd have to option+command+P+R and restart it.
PS: the blur on the left was done by myself for privacy.
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Dollars to donuts you're leaving it connected to an external display -am I wrong?
That's part of what's causing the panics. You have to disconnect it.
Another work around is to turn off power nap and wake from wifi and to MANUALLY set it to sleep -as in click the Apple logo and click on sleep. Don't let it fall asleep by itself while connected to an external monitor as that may cause the kernel panic. Won't cause it every time, but when the panic happens, I've observed that it's always connected to an external and it has always fallen asleep by itself.
I've done that and I've been able to leave it connected to an external, which also happens to power the laptop.
You can get the visual glitches to go away by switching to the Intel GPU and refreshing the webpage or restarting the app. To switch to the Intel you have to disconnect from an external monitor.
Also, people report that disabling hardware acceleration in Chrome et al and enabling metal helps.
I urge everyone dealing with this to contact Apple Support to make them aware of the issue(s). That way it will be documented and we may get a solution sooner rather than later.
I don't have an external monitor in the tradition sense, but I do sometimes leave my iPad Pro plugged into the machine (not running in sidecar or anything like that) and I have an external SSD plugged in for backups most of the time.
Do we think the iPad could also be causing the same issues as external monitors?
Since downgrading from 10.15.4 to 10.15.3, turning off automatic GPU switching, disabling sleep in its various forms and setting the machine to automatically shut down at 12am, I've not had the issues, even with these peripherals plugged in.
I'm just fed up of having to jump through hoops and disable features I should be able to use or have to disconnect things in order to make this machine work without getting hotter then the sun and shutting off/crashing unexpectedly.
Do we think the iPad could also be causing the same issues as external monitors?
Since downgrading from 10.15.4 to 10.15.3, turning off automatic GPU switching, disabling sleep in its various forms and setting the machine to automatically shut down at 12am, I've not had the issues, even with these peripherals plugged in.
I'm just fed up of having to jump through hoops and disable features I should be able to use or have to disconnect things in order to make this machine work without getting hotter then the sun and shutting off/crashing unexpectedly.
I have also experienced this issue. It started with Chrome. Toggling the hardware acceleration off and relaunching the browser solved this issue. After re-enabling hardware acceleration, the problem returned. I've had it happen in Firefox as well.
This only happens when using external monitors (or presuming the Radeon discrete card active). The most recent instance occurred in Spotify.
I also get the KP happening when the unit falls asleep on my Sonnet Echo 11 dock. This wasn't happening before. I thought I had corrupted video RAM or some other hardware issue occurring with my 5-month-old unit. I'm somewhat relieved to find others able to attribute it to a software glitch.
This only happens when using external monitors (or presuming the Radeon discrete card active). The most recent instance occurred in Spotify.
I also get the KP happening when the unit falls asleep on my Sonnet Echo 11 dock. This wasn't happening before. I thought I had corrupted video RAM or some other hardware issue occurring with my 5-month-old unit. I'm somewhat relieved to find others able to attribute it to a software glitch.
I have an i9/5500 and had the issue as well. Mine happened when running a custom fan profile on TG Pro. I'd set the fan levels to trigger off of Highest CPU Temp. While that kept things nice and quiet, I missed that my Thunderbolt ports were getting hot. That would normally trigger the system fan settings but didn't w TG Pro. As soon as I turned fan settings back to system, well maybe 10 seconds of fans on full, the blue went away.
Same here - MBP16 2019 - for many months, since Catalina 10.15.2 or 10.15.3 to the newest version (or even with Big Sur beta version). Chrome, Slack, sometimes Safari, Finder, even System Preferences suffers from graphic corruption. Closing the LCD lid (i.e. sleep) will sometimes temporarily fix the graphic corruption, but not always. Sometimes the display stop refreshing the rendering (MBP still alive, but no movement on display at all) - Sometimes the GPU crashes happen, as seen on here: https://forums.macrumors.com/threads/16-mbp-gpu-panics.2221004/
BTW are all of you here have MBP16 with Radeon 5500M?
Anyone who has the same issue with MBP16 with 5300M or 5600M?
Just curious.
Anyone who has the same issue with MBP16 with 5300M or 5600M?
Just curious.
I reported having it earlier in this thread and I have the i7/5300
hasn’t happened to me for weeks now I did turn off power nap. Usually I have an external monitor plugged in
It isn't happening to me anymore not sure if related to having powerNap disabled or not but my original screen shot is in this thread:- https://forums.macrumors.com/threads/whatsapp-ui-corruption.2232970/
Anyone experiencing "flickering" when watching youtube/twitch? Like it'll flash black and then play normally. I'm starting to get it randomly with Chrome. It's a bit better with Safari but still happens randomly.
RIP GPU?
I've been using my 16" MBP 5500m with an external monitor so maybe my GPU is frying due to the overheating issue???? I hope it's just a software bug.
RIP GPU?
I've been using my 16" MBP 5500m with an external monitor so maybe my GPU is frying due to the overheating issue???? I hope it's just a software bug.
Seems this issue is not resolved. Seeing now and then with Chromium-based apps. Indeed seems to be related to overheating. Still failing on 10.15.6 and latest Chrome.
It did not, and in many apps that use Chromium as a base (electron) they break as well.
Looks like it's something to do with load and overheating.
Looks like it's something to do with load and overheating.
Keep seeing Chrome and Chromium-based apps as a major source of the problem here. It may be the catalyst but it's a big cause.
I am speechless... here we go again. Good job Apple, you made a circle. I don't know how many people remember the complete fiasco of 2011 MBP dGPUs but it seems like we're getting the same thing over again.
My 2011 MBP initially started getting similar graphical issues, starting after couple of days of intensive workloads (=heating) and ESPECIALLY in Chrome but later on in all apps using GPU:
Fast forward to 2020 with MBP16 and we're getting this:
Another, very consistent with what I had on my old 2011 symptom is sudden drop in performance: https://browser.geekbench.com/v5/cpu/4338498
What also I think nobody pointed out here yet is the glitches occur ONLY on accelerated content! In case of Chrome the whole tab is accelerated. In Safari rendering is more granular (probably to save energy) and only content which needs more powerful GPU is accelerated. As you can see on the screenshots from my MBP16 this theme is visible too. On the 1st screenshot from Safari only rendered content is garbled where things like texts and just normal elements of the website are not affected. On the second screenshot the whole tab content is garbled while the window decoration is not.
Call me crazy but they look darn similar....
My 2011 MBP initially started getting similar graphical issues, starting after couple of days of intensive workloads (=heating) and ESPECIALLY in Chrome but later on in all apps using GPU:
Fast forward to 2020 with MBP16 and we're getting this:
Another, very consistent with what I had on my old 2011 symptom is sudden drop in performance: https://browser.geekbench.com/v5/cpu/4338498
What also I think nobody pointed out here yet is the glitches occur ONLY on accelerated content! In case of Chrome the whole tab is accelerated. In Safari rendering is more granular (probably to save energy) and only content which needs more powerful GPU is accelerated. As you can see on the screenshots from my MBP16 this theme is visible too. On the 1st screenshot from Safari only rendered content is garbled where things like texts and just normal elements of the website are not affected. On the second screenshot the whole tab content is garbled while the window decoration is not.
Call me crazy but they look darn similar....
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