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Copious "CGContext..." errors

  • 9 uphendule
  • 1 inale nkinga
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  • Igcine ukuphendulwa ngu dustinhuman

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Just clean-installed OS X Yosemite, running Firefox 33 and getting TONS of "CGContext..." errors, such as these:

   CGContextTranslateCTM: invalid context 0x0
   CGContextScaleCTM: invalid context 0x0
   CGContextSetAlpha: invalid context 0x0
   CGContextSetShouldAntialias: invalid context 0x0
   CGContextConcatCTM: invalid context 0x0
   CGContextScaleCTM: invalid context 0x0
   CGContextSetInterpolationQuality: invalid context 0x0
   CGContextDrawImage: invalid context 0x0 

I found this thread (https://support.mozilla.org/en-US/questions/984296) and the consensus there seemed to be that this was a bug fixed in Firefox 29.

BTW, I did copy and paste my old extensions into my new extensions folder when I installed Yosemite, don't know if that's relevant.

Thanks for any help.

Just clean-installed OS X Yosemite, running Firefox 33 and getting TONS of "CGContext..." errors, such as these: CGContextTranslateCTM: invalid context 0x0 CGContextScaleCTM: invalid context 0x0 CGContextSetAlpha: invalid context 0x0 CGContextSetShouldAntialias: invalid context 0x0 CGContextConcatCTM: invalid context 0x0 CGContextScaleCTM: invalid context 0x0 CGContextSetInterpolationQuality: invalid context 0x0 CGContextDrawImage: invalid context 0x0 I found this thread (https://support.mozilla.org/en-US/questions/984296) and the consensus there seemed to be that this was a bug fixed in Firefox 29. BTW, I did copy and paste my old extensions into my new extensions folder when I installed Yosemite, don't know if that's relevant. Thanks for any help.

Okulungisiwe ngu dustinhuman

Isisombululo esikhethiwe

dustinhuman, It looks like they resolved this in Firefox 34, if the errors continue to happen after updating to the latest version please do post back!

Funda le mpendulo ngokuhambisana nalesi sihloko 👍 1

All Replies (9)

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Have you tried to disable scrolling acceleration in the Firefox Menu > Preferences > Advanced > General ?

If I may humbly also ask that you follow the new bug that we have opened up to investigate if this is indeed a regression: https://bugzilla.mozilla.org/show_bug.cgi?id=1087065

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Sorry for the delay in following up with your reply. I disabled scrolling acceleration but still have the errors.

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I'm still having this issue. It also looks like nothing's happened yet on bugzilla. Just wondering if there's anything I can do to nudge this along.

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After some more research the reference to these calls is below: https://developer.apple.com/library/i.../index.html

It also seems like these could be ignored if it is not affecting the functionality? https://support.mozilla.org/en-US/que.../981674?page=2

I also found this: https://bugzilla.mozilla.org/show_bug.cgi?id=1058713 Can you please test if this is still happening if you install beta?

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Thanks for the research. I can't be sure that it doesn't affect performance. I mean it must to some degree; there are LOTS of errors generating.

I would like to try that build, but the link is dead.

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Isisombululo Esikhethiwe

dustinhuman, It looks like they resolved this in Firefox 34, if the errors continue to happen after updating to the latest version please do post back!