#Error ‘Bad CurrentVBLDelta for display 69673216 is zero. defaulting to 60Hz.’ MBP5,1 late 2008,15”
65 messages · Page 1 of 1 (latest)
Defaulting to 60Hz is expected, your issue is unrelated
Try reinstalling
I appreciate the advice. Any idea what how reinstalling can fix this? What would it specifically address? On MBP 5,1, 15”, there is no ability to change frequency whichever resolution is used. Can process’ Bad CurrentVbLDelta’ be killed the moment it starts up, or better still prevented from being issued?
You can manually set resolution and refresh rate with DisplayPlacer
CurrentVBLDelta isn't a process per se
Also Bad CurrentVBLDelta defaulting to 60HZ still happening regardless of fullscreen or not.
There's a possible solution at the end of this thread
https://developer.apple.com/forums/thread/701855
Do you mean this “Try adding OS_ACTIVITY_MODE to the envirable variables (within the run settings) and set that env variable to disable”?
Yes
Actually it won't help, it's an xcode env variable, not a system one
Full credit to Russell Ivanovic for his tweet for figuring out how to disable Xcode 8’s extremely chatty debug console logging. I just wanted this here for my own reference, but perhaps it’s helpful to you as well.
If you’re tired of sifting through operating system-level logging to the debug console while you’re debugging your app, it’s actuall...
I have reported this to Apple as happening in the Core Video API.
I wonder if downgrading the offending browsers to pre-Monterey versions will stop it? Or if it has something to do with the disabled dGpu (9600M)?
It doesn’t actually harm anything, your issue is unrelated and most likely solvable with a reinstall
Do you recommend reinstall over existing or fully delete ssd for clean install?
Clean if possible, but could try a reinstall
What’s your understanding of what gets resolved by doing this? What specifically gets rectified?
I’ve reinstalled but root patches are not installing. Oclp goes through the unzipping and requests reboot but they don’t install. Any suggestions please?
Ahh yeah that's why I do a fresh install for major updates
That’s a shame as it fixed the blank Wifi pane in Preferences. I’ll do a fresh install tomorrow. Thanks for all your help. 🙂
What I do with mine is alternate partitions, so I have a stable version to fall back on
Like right now my 2015 has a partition for Monterey, a partition for Ventura, and a partition for user profiles
What size is your Monterey partition?
100gb each
Roughly, from a 512gb
Probably like 96gb
When macOS Sequoia comes out I'll wipe the Monterey partition to install it
macOS will be fine with much smaller partitions though
I’m stuck with a main 240gb SSD and another internal 750GB HDD with El Capitan partition for the time being. I can’t afford the space to give 100gb on the SSD to two partitions. I think i’ll be ok when I do the full clean install of Ventura again as the Bad CurrentVBLDelta error happens less than it did with Monterey. In other words I can get work done with this oclp Ventura.
I’ve never seen this screen before when installing oclp!?
I had the same issue when installing Ventura on my MacBookPro9,2. I forced a shutdown and booted back into the Boot Picker (hold Option). And then I tried the install again, and it worked. But I started having further issues and just went with Monterey. It's been completely stable compared to Ventura. I'll make the shift when I'm confident that it's better.
I had to format the SSD from within The Boot Picker -> Install Ventura, as opposed to from booting into Recovery and selecting Disk Utility in order to format from there. Now I am back up and running on Ventura but with the same issues as before - Bad CurrentVBLDelta etc.
I would be very curious to see if a copy of Ventura installed on an external drive using a different computer produces the same error when booted on this computer
Interesting idea! I will see about arranging that. Thanks…..
How many times do you have to be told that the CurrentVBDelta error is not even remotely related to your problem and is totally normal
My mac freezing for 30 second durations regularly is not normal. I have noted the start and stop times of the freezing and cross referenced those times with the error outputs in the Console. Bad CurrentVBDDelta appears at the start at stop times with multiple appearances in between. Forgive me if I have concluded incorrectly. If you know it is absolutely not the cause of the problem then what is the cause?
This is the error log from Console when I opened Tot App (quick notes app) which initiated a 30s freeze/hang starting at 13:56:33. The log includes 1s before the hang started. No Bad Current this time. Is there anything hear that suggests what is causing the freeze? Would seeing AllMessages during that time period from Console be helpful?
It could help, it sounds like this error might be a symptom rather than the cause
This is the whole log for the 30s; including 1s before.
Hard drive is in good condition. Display works perfectly. What kind of symptom are you thinking?
As. I have explained my reasoning would you do me the courtesy of the same ASentientHedgey?
I meant that something else less obvious might be causing both the crashes, and this error
Clearly, but how can this be determined if both Console and Activity Monitor do not supply information pointing to the hangs?
By working through and eliminating possible causes. Have you already tried installing macOS to an external drive and booting from that?
CurrentVBDelta’s complaint is it doesn’t know what refresh rate is appropriate for your computers screen, so it defaults to 60Hz
Which is your monitors default refresh rate
I, along with the rest of the non-metal devs, have spent extensive time researching these bugs and errors
It’s totally harmless and unrelated
I will try that when i have sorted a new problem of the Ventura installer which is now now asking to pair a keyboard. It’s been suggested to bypass this by connecting a USB keyboard (which i don’t have). This allowed me to select on on screen keyboard before. I don’t know why this new pairing screen is now appearing.
Do you have the Magic Keyboard? You may need to connect it with a lightning cable in order to pair it again
I don’t. Must it be the Magic Keyboard?
You need a wired keyboard through a usb hub
Read the guide and documentation, please
Both of you
Can you supply link please?
Ahh right, I'd forgotten about that.
See under "USB 1.1"
👍