Screen flicker and delay in texmaker (possible problem w\ qt5-webkit)

Long time reader, first time poster. Never needed to post a problem before because of the amazing amount of assistance already offered here.
I have a minor problem (annoying but could live with it), and so far, I can't find anything on it. Moreover, I really don't know what error logs to consult about it or how to go about finding the source of the problem. So, I apologize in advance for the lack of information on the problem, but part of my question is what to look for.
Had a machine that was a bit behind on updates (about a year), went through all the news posts, updated as required, everything went fine, and everything is still working. There are two applications, though, that seem a bit buggy: texmaker and calibre. Whenever I open either up, it takes quite a bit longer than it did prior to the update, and my screen starts to flicker a fair bit. Eventually, both open up and run just fine, but the delay and screen flickering troubles me. I don't use calibre often, but I use texmaker all the time. So, I would like to see if there is anything I can do to sort this out.
I checked the general logs from journalctl and dmesg to see if there were any errors, and there wasn't anything. I also checked the xorg log to see if there were any errors there, and again, nothing. The only dependency the two programs have in common is qt5-webkit, and that was installed with the last update.
Could anyone recommend a way to figure out if that is the source of the problem or find more information about why it is happening?
Thanks in advance, and if I have violated any of the norms of posting, feel free to reprimand me firmly but gently; it is my first time after all.

yesterday crashes (mar 26)were all signed Torchupdater
so I uninstalled Torch
Today's crash (mar 27)was signed window server
Cant uninstall finder....

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Model Identifier: iMac9,1
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iMac:
Resolution:          1920 x 1200
Pixel Depth:          32-Bit Color (ARGB8888)
Main Display:          Yes
Mirror:          Off
Online:          Yes
Built-In:          Yes
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http://support.apple.com/kb/HT3964
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Unplug the computer's power cord and ALL peripherals.
Wait 15 seconds.
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Hi , and a warm welcome to the forums!
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Solved!
Go to Solution.

mmster55 wrote:
Good point. I fiddled with my friends laptop after I was convinced I could fix his Dell screen. Its still sitting in my room 2 years later. Thanks for the info.
i am in the same boat with my T30, T40, T42.... i decided to pull them apart and have yet to put them back again, i think i have lost some of the screws too.....
Regards,
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May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

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Article on using:
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Clear out Cache Files.
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Dump the VM files for a fresh start.
Trash old Log files.
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http://support.apple.com/kb/ht1509
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Lion causes your system to use more resources so it will run hotter. If you haven't cleaned you iMac's dust out:
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http://support.apple.com/kb/HT3964
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Hi there,
My macbook pro has been running fine for the past 3 and a bit years, but yesterday this very strange issue started occuring.
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So then I have to press the power off button to shut down the computer. Once I turn it back on, there are lines and distortions all over the grey screen except on the Apple logo.
Next time it happens, I will try and save a photo of it.
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13/01/11 10:30:59 AM com.apple.launchd[1] * launchd[1] has started up. *
13/01/11 10:31:43 AM com.apple.WindowServer67 Thu Jan 13 10:31:43 jonathan-marskells-macbook-pro.local WindowServer67 <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
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From what I've read on different posts regarding video card issues and the early 2008 15" MBPs, or "affected models", Apple seems very selective at what they'll honor for repair. Hopefully my MBP will be repaired under this recall, but am not holding my breath.
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Art

Any solution for having daily screen flicker on my 2.13GHz 13" 2011 Macbook Air (running 10.6.8)???

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For those of u with screen flicker, what did applecare say

I noticed an ever so slight flicker a couple of weeks ago; only a few times, randomly, and so little that i would think to myself "did the screen just flash" (it was infact, cause i would stare at it for a few seconds afterwards and it would keep doing it) now i was using it and a a pretty dramatic very noticable screen flash, and im afriad of the problem getting worse.
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I only accepted it with one tiny dead pixel, wich i didn't bother, cause my wallpaper is always dark.
Last year(it was june i suppose) i bought a white 1,83 CD, this one had a broken topcase and i returned it to the apple reseller as a DOA, then I decided to buy a black one, wich was getting as hot as can be, you could cook an egg on the bottom for instance. So also DOA, the third one was having kernel panics all the time but not at the store while our genius was inspecting the damned thing(you'll see, that will always happen (**** i mean)).
So, new year, new chances, again I choose a white one, cause the black had so many fingerprints on it, I would be probably arrested for something.

MBP 13" Screen Flickers and Freezes After Upgrading HDD

Hi There,
I have seen on here and a few other forums that people are having issues with graphics cards or overheating that is making the MBP screen flicker and freeze.
Mine has been fine until yesterday when I installed a new Seagte 1tb HDD. It works ok, but every now and then the screen starts to flicker, half of it goes black and the system freezes. Sometimes it's just for a few minutes, but sometimes I need to do a hard reset by holden the power button down for 5 seconds.
Here are the details:
MBP 5,5 13" (2008 I think - Can't remember)
Boot ROM Version:
MBP55.00AC.B03
SMC Version (system):
1.47f2
Version 10.6.8
2.26Ghz Intel Core 2 Duo
8gb 1067 Mhz DDR3 (Just upgraded, but before the hard drive and no issues)
1TB Seagate Momentus SATA HDD
As mentioned, I upgraded the RAM a week or so ago and it has been running fine. I put the new hard drive in last night and after a few hours, the flickering started.
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I cleared the PRAM and installed smcfan control as another forum with similar issues said it was a overheating problem and running the fan control program should fix it. I did that at 8am this morning and it has run great all day. Come 5.30pm, the flickering started and then it froze.. GREAT!!!!
It's so frustrating, I was really looking forward to having my MBP upgraded and running fast again.
Any ideas or tips would be very welcome.
Thanks in advance.

set old HD. If problem will gone - you have weakened power supply or internal power converters. Yours new HD draw more power during spinup or something - so voltage on internal bus lowers and memory or videocard freaks.
5.30 PM looks like a time when there begins a lot of load on city energy grid - so voltage in wall socket goes a bit unstable, it may also add to problem.
if problem is gone when you are on battery power - its power supply. If it persists or get worse when on battery - its internal power convertors.

Screen flicker and delay in texmaker (possible problem w\ qt5-webkit)

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