panic(cpu 8 caller 0xffffff7f8a9a766f): "displayModeDidChange failed: set_display_mode_and_vram failed!
Just now in 10.13.6 Beta 1 on my MacPro6,1 (D300):
Code:panic(cpu 8 caller 0xffffff7f8a9a766f): "displayModeDidChange failed: set_display_mode_and_vram failed!
So no, I don't think it's fixed yet.
I have the same problem for some time. Before i did not give him so much weight as it rarely happened to me, now that the Mac Pro is turned on day and night i notice that the problem has become more present.
The panic report has always reported the following string :
*** Panic Report ***
panic(cpu 0 caller 0xffffff7f9d11ed7a): "bool IOAccelDisplayMachine2::display_mode_did_change(uint32_t): vendor driver returns false"@/BuildRoot/Library/Caches/com.apple.xbs/Sources/IOAcceleratorFamily_kexts/IOAcceleratorFamily-378.18.1/Kext2/IOAccelDisplayMachine.cpp:490
Going to analyze the system logs i found that always, just before going into the kernel panic, this error was present :
Jun 4 23:59:52 Mac-Pro-di-Eugenio com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
After a series of searches i managed to eliminate this error from the console by following this steps :
- Disable System Integrity Protection so you can edit the .plist file. Do this by rebooting into the recovery partition with cmd-R, open Terminal from the Utilities menu, and type:
csrutil disable
- Reboot into yoru system, then edit the .plist file with this command:
sudo vi /System/Library/LaunchAgents/com.apple.preference.displays.MirrorDisplays.plist
- Comment out the line that causes the MirrorDisplays tool to load. Change this line:
<string>Aqua</string>
to this:
<!-- <string>Aqua</string> -->
- Then, reboot and reenable System Integrity Protection using the recovery partition as described above and type:
csrutil enable
After having made this change the log file no longer contains the error indicated above and, at least for the moment, i no longer had kernel panics.
P.S. i apologize for any writing errors
After having made this change the log file no longer contains the error indicated above and, at least for the moment, i no longer had kernel panics.
P.S. i apologize for any writing errors
panic(cpu 0 caller 0xffffff7f9878c577): "displayModeDidChange failed: set_display_mode_and_vram failed!
"@/BuildRoot/Library/Caches/com.apple.xbs/Sources/GPUDriversAMD/GPUDriversAMD-1.66.42/Common/GLKernel/ATI/Accel/AMDAccelDisplayMachine.cpp:299
This was also when I got the freeze. To add some info, got rid of Firefox and have been using Safari exclusively. I still get occasion "displaymodedidfail" errors, the difference being, High Sierra will shutdown and then restart itself giving me the notification of failure upon restart. I haven't had to do a hard shutdown since i shifted from Firefox.
Not surprising, since Apple itself is unable to discover (or unwilling to admit) the root problem.
This is really the problem. i am sure that has LOTS of reports about this failure. I know they have received at least 10-15 from me alone. And every one of them says the same thing about displaymodedidfail. Yet they refused to accept my nMP for repair when the fault was not reproducible. It spent almost a week at the local store and never once froze or rebooted during that time. But even with a copy of one failure given to them, until it fails they won't touch it.
I have the same problem for some time. Before i did not give him so much weight as it rarely happened to me, now that the Mac Pro is turned on day and night i notice that the problem has become more present.
The panic report has always reported the following string :
*** Panic Report ***
panic(cpu 0 caller 0xffffff7f9d11ed7a): "bool IOAccelDisplayMachine2::display_mode_did_change(uint32_t): vendor driver returns false"@/BuildRoot/Library/Caches/com.apple.xbs/Sources/IOAcceleratorFamily_kexts/IOAcceleratorFamily-378.18.1/Kext2/IOAccelDisplayMachine.cpp:490
Going to analyze the system logs i found that always, just before going into the kernel panic, this error was present :
Jun 4 23:59:52 Mac-Pro-di-Eugenio com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
After a series of searches i managed to eliminate this error from the console by following this steps :
- Disable System Integrity Protection so you can edit the .plist file. Do this by rebooting into the recovery partition with cmd-R, open Terminal from the Utilities menu, and type:
csrutil disable
- Reboot into yoru system, then edit the .plist file with this command:
sudo vi /System/Library/LaunchAgents/com.apple.preference.displays.MirrorDisplays.plist
- Comment out the line that causes the MirrorDisplays tool to load. Change this line:
<string>Aqua</string>
to this:
<!-- <string>Aqua</string> -->
- Then, reboot and reenable System Integrity Protection using the recovery partition as described above and type:
csrutil enable
After having made this change the log file no longer contains the error indicated above and, at least for the moment, i no longer had kernel panics.
P.S. i apologize for any writing errors
I did just now, after my nMP panicked again (first time since my previous post on Monday, when it panicked twice).
My feeling is that it won't help, as those log messages seem more like a symptom of the problem – other things also go nuts during the freeze/before the panic. I'd love to be wrong on this though.
