Mac Air Freezing in Firefox

If you have more than one user account, these instructions must be carried out as an administrator.

Launch the Console application in any of the following ways:

☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

☞ Open LaunchPad. Click Utilities, then Console in the icon grid.

Step 1

Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select

View ▹ Show Log List

from the menu bar.

Enter "BOOT_TIME" (without the quotes) in the search box. Note the timestamps of those log messages, which refer to the times when the system was booted. Now clear the search box and scroll back in the log to the last boot time after you had the problem. Select the messages logged before the boot, while the system was unresponsive or was failing to shut down. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message (command-V). Please include the BOOT_TIME message at the end of the log extract.

If there are runs of repeated messages, post only one example of each. Don’t post many repetitions of the same message.

When posting a log extract, be selective. In most cases, a few dozen lines are more than enough.

Please do not indiscriminately dump thousands of lines from the log into this discussion.

Important: Some private information, such as your name, may appear in the log. Anonymize before posting.

Step 2

Still in Console, look under System Diagnostic Reports for crash or panic logs, and post the entire contents of the most recent one, if any. In the interest of privacy, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if present (it may not be.) Please don’t post any other kind of report — it will be very long and not helpful.

I would need the requested information to be able to make a suggestion as to how you might solve the problem. I have nothing to do with Apple, and anything you post on this page becomes public knowledge.

"Avast" is perhaps the worst of the whole wretched lot of commercial "security" products for the Mac. It's worse than the imaginary "viruses" you were worried about when you installed it. Not only does it fail to protect you from any real danger, it throws false warnings, destabilizes and slows down your computer, and sometimes or always corrupts the network settings and the permissions of files in your home folder. Removing it may not repair all the damage, and neither will Disk Utility or even reinstalling OS X.

Back up all data, then remove "Avast" according to the developer's instructions. Reboot.

If you tried to remove Avast by dragging an application to the Trash, you'll have to reinstall it and then follow the instructions linked above.

If you still have problems after following those instructions, post again.

1. This procedure is a diagnostic test. It changes nothing, for better or worse, and therefore will not, in itself, solve your problem.

2. If you don't already have a current backup, back up all data before doing anything else. The backup is necessary on general principle, not because of anything in the test procedure. There are ways to back up a computer that isn't fully functional. Ask if you need guidance.

3. Below are instructions to run a UNIX shell script, a type of program. All it does is to gather information about the state of your computer. That information goes nowhere unless you choose to share it on this page. However, you should be cautious about running any kind of program (not just a shell script) at the request of a stranger on a public message board. If you have doubts, search this site for other discussions in which this procedure has been followed without any report of ill effects. If you can't satisfy yourself that the instructions are safe, don't follow them. Ask for other options.

Here's a summary of what you need to do, if you choose to proceed: Copy a line of text from this web page into the window of another application. Wait for the script to run. It usually takes a few minutes. Then paste the results, which will have been copied automatically, back into a reply on this page. The sequence is: copy, paste, wait, paste again. Details follow.

4. You may have started the computer in "safe" mode. Preferably, these steps should be taken in “normal” mode. If the system is now in safe mode and works well enough in normal mode to run the test, restart as usual. If you can only test in safe mode, do that.

5. If you have more than one user, and the one affected by the problem is not an administrator, then please run the test twice: once while logged in as the affected user, and once as an administrator. The results may be different. The user that is created automatically on a new computer when you start it for the first time is an administrator. If you can't log in as an administrator, test as the affected user. Most personal Macs have only one user, and in that case this section doesn’t apply.

6. The script is a single long line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, though you may not see all of it in your browser, and you can then copy it. If you try to select the line by dragging across the part you can see, you won't get all of it.

Triple-click anywhere in the line of text below on this page to select it:

PATH=/usr/bin:/bin:/usr/sbin:/sbin; clear; Fb='%s\n\t(%s)\n'; Fm='\n%s\n\n%s\n'; Fr='\nRAM details\n%s\n'; Fs='\n%s: %s\n'; Fu='user %s%%, system %s%%'; PB="/usr/libexec/PlistBuddy -c Print"; A () { [[ a -eq 0 ]]; }; M () { find -L "$d" -type f | while read f; do file -b "$f" | egrep -lq XML\|exec && echo $f; done; }; Pc () { o=`grep -v '^ *#' "$2"`; Pm "$1"; }; Pm () { [[ "$o" ]] && o=`sed -E '/^ *$/d; s/^ */ /; s/[-0-9A-Fa-f]{22,}/UUID/g' <<< "$o"` && printf "$Fm" "$1" "$o"; }; Pp () { o=`$PB "$2" | awk -F'= ' \/$3'/{print $2}'`; Pm "$1"; }; Ps () { o=`echo $o`; [[ ! "$o" =~ ^0?$ ]] && printf "$Fs" "$1" "$o"; }; R () { o=; [[ r -eq 0 ]]; }; SP () { system_profiler SP${1}DataType; }; id -G | grep -qw 80; a=$?; A && sudo true; r=$?; t=`date +%s`; clear; { A || echo $'No admin access\n'; A && ! R && echo $'No root access\n'; SP Software | sed '8!d;s/^ *//'; o=`SP Hardware | awk '/Mem/{print $2}'`; o=$((o<4?o:0)); Ps "Total RAM (GB)"; o=`SP Memory | sed '1,5d;/[my].*:/d'`; [[ "$o" =~ s:\ [^O]|x([^08]||0[^2]8[^0]) ]] && printf "$Fr" "$o"; o=`SP Diagnostics | sed '5,6!d'`; [[ "$o" =~ Pass ]] || Pm "POST"; p=`SP Power`; o=`awk '/Cy/{print $NF}' <<< "$p"`; o=$((o>=300?o:0)); Ps "Battery cycles"; o=`sed -n '/Cond.*: [^N]/{s/^.*://p;}' <<< "$p"`; Ps "Battery condition"; for b in Thunderbolt USB; do o=`SP $b | sed -En '1d;/:$/{s/ *:$//;x;s/\n//p;};/^ *V.* [0N].* /{s/ 0x.... //;s/[()]//g;s/(.*: )(.*)/ \(\2\)/;H;};/Apple|Genesy|SMSC/{s/.//g;h;}'`; Pm $b; done; o=`pmset -g therm | sed 's/^.*C/C/'`; [[ "$o" =~ No\ th|pms ]] && o=; Pm "Thermal conditions"; o=`pmset -g sysload | grep -v :`; [[ "$o" =~ =\ [^GO] ]] || o=; Pm "System load advisory"; o=`nvram boot-args | awk '{$1=""; print}'`; Ps "boot-args"; a=(/ ""); A=(System User); for i in 0 1; do o=`cd ${a[$i]}L*/Lo*/Diag* || continue; for f in *.{cr,h,pa,s}*; do [[ -f "$f" ]] || continue; d=$(awk '/^D/{print $2; exit}' "$f"); [[ "$f" =~ h$ ]] && grep -lq "^Thread c" "$f" && e=\* || e=; echo $d ${f%_$d*} ${f##*.} "$e"; done | sort | tail`; Pm "${A[$i]} diagnostics"; done; [[ "$o" =~ \*$ ]] && printf $'\n* Code injection\n'; o=`syslog -F bsd -k Sender kernel -k Message CReq 'GPU |hfs: Ru|I/O e|last value [1-9]|n Cause: -|NVDA\(|pagin|SATA W|ssert|Thrott|timed? ?o' | tail -n25 | awk '/:/{$4=""; $5=""};1'`; Pm "Kernel messages"; o=`df -m / | awk 'NR==2 {print $4}'`; o=$((o<5120?o:0)); Ps "Free space (MiB)"; o=$(($(vm_stat | awk '/eo/{sub("\\.",""); print $2}')/256)); o=$((o>=1024?o:0)); Ps "Pageouts (MiB)"; s=( `sar -u 1 10 | sed '$!d'` ); [[ s[4] -lt 85 ]] && o=`printf "$Fu" ${s[1]} ${s[3]}` || o=; Ps "Total CPU usage" && { s=(`ps acrx -o comm,ruid,%cpu | sed '2!d'`); n=$((${#s[*]}-1)); c="${s[*]}"; o=${s[$n]}%; Ps "CPU usage by process \"${c% ${s[$((n-1))]}*}\" with UID ${s[$((n-1))]}"; }; s=(`top -R -l1 -n1 -o prt -stats command,uid,prt | sed '$!d'`); n=$((${#s[*]}-1)); s[$n]=${s[$n]%[+-]}; c="${s[*]}"; o=$((s[$n]>=25000?s[$n]:0)); Ps "Mach ports used by process \"${c% ${s[$((n-1))]}*}\" with UID ${s[$((n-1))]}"; o=`kextstat -kl | grep -v com\\.apple | cut -c53- | cut -d\< -f1`; Pm "Loaded extrinsic kernel extensions"; R && o=`sudo launchctl list | awk 'NR>1 && !/0x|com\.(apple|openssh|vix\.cron)|org\.(amav|apac|calendarse|cups|dove|isc|ntp|post[fg]|x)/{print $3}'`; Pm "Extrinsic daemons"; o=`launchctl list | awk 'NR>1 && !/0x|com\.apple|org\.(x|openbsd)|\.[0-9]+$/{print $3}'`; Pm "Extrinsic agents"; o=`for d in {/,}L*/Lau*; do M; done | grep -v com\.apple\.CSConfig | while read f; do ID=$($PB\ :Label "$f") || ID="No job label"; printf "$Fb" "$f" "$ID"; done`; Pm "launchd items"; o=`for d in /{S*/,}L*/Star*; do M; done`; Pm "Startup items"; o=`find -L /S*/L*/{C*/Sec*A,E}* {/,}L*/{A*d,Compon,Ex,In,iTu,Keyb,Mail/B,P*P,Qu*T,Scripti,Sec,Servi,Spo}* -type d -name Contents -prune | while read d; do ID=$($PB\ :CFBundleIdentifier "$d/Info.plist") || ID="No bundle ID"; [[ "$ID" =~ ^com\.apple\.[^x]|Accusys|ArcMSR|ATTO|HDPro|HighPoint|driver\.stex|hp-fax|\.hpio|JMicron|microsoft\.MDI|print|SoftRAID ]] || printf "$Fb" "${d%/Contents}" "$ID"; done`; Pm "Extrinsic loadable bundles"; o=`find -L /u*/{,*/}lib -type f | while read f; do file -b "$f" | grep -qw shared && ! codesign -v "$f" && echo $f; done`; Pm "Unsigned shared libraries"; o=`for e in INSERT_LIBRARIES LIBRARY_PATH; do launchctl getenv DYLD_$e; done`; Pm "Environment"; o=`find -L {,/u*/lo*}/e*/periodic -type f -mtime -10d`; Pm "Modified periodic scripts"; o=`scutil --proxy | grep Prox`; Pm "Proxies"; o=`scutil --dns | awk '/r\[0\] /{if ($NF !~ /^1(0|72\.(1[6-9]|2[0-9]|3[0-1])|92\.168)\./) print $NF; exit}'`; Ps "DNS"; R && o=`sudo profiles -P | grep : | wc -l`; Ps "Profiles"; f=auto_master; [[ `md5 -q /etc/$f` =~ ^b166 ]] || Pc $f /etc/$f; for f in fstab sysctl.conf crontab launchd.conf; do Pc $f /etc/$f; done; Pc "hosts" <(grep -v 'host *$' /etc/hosts); Pc "User launchd" ~/.launchd*; R && Pc "Root crontab" <(sudo crontab -l); Pc "User crontab" <(crontab -l | sed -E 's:/Users/[^/]+/:/Users/USER/:g'); R && o=`sudo defaults read com.apple.loginwindow LoginHook`; Pm "Login hook"; Pp "Global login items" /L*/P*/loginw* Path; Pp "User login items" L*/P*/*loginit* Name; Pp "Safari extensions" L*/Saf*/*/E*.plist Bundle | sed -E 's/(\..*$|-[1-9])//g'; o=`find ~ $TMPDIR.. \( -flags +sappnd,schg,uappnd,uchg -o ! -user $UID -o ! -perm -600 \) | wc -l`; Ps "Restricted user files"; cd; o=`SP Fonts | egrep "Valid: N|Duplicate: Y" | wc -l`; Ps "Font problems"; o=`find L*/{Con,Pref}* -type f ! -size 0 -name *.plist | while read f; do plutil -s "$f" >&- || echo $f; done`; Pm "Bad plists"; d=(Desktop L*/Keyc*); n=(20 7); for i in 0 1; do o=`find "${d[$i]}" -type f -maxdepth 1 | wc -l`; o=$((o<=n[$i]?0:o)); Ps "${d[$i]##*/} file count"; done; o=; [[ UID -eq 0 ]] && o=root; Ps "UID"; o=$((`date +%s`-t)); Ps "Elapsed time (s)"; } 2>/dev/null | pbcopy; exit 2>&-

exec bash

9. If you're logged in as an administrator, you'll be prompted for your login password. Nothing will be displayed when you type it. You will not see the usual dots in place of typed characters. Make sure caps lock is off. Type carefully and then press return. You may get a one-time warning to be careful. If you make three failed attempts to enter the password, the test will run anyway, but it will produce less information. In most cases, the difference is not important. If you don't know your password, or if you prefer not to enter it, just press return three times at the password prompt.

If you're not logged in as an administrator, you won't be prompted for a password. The test will still run. It just won't do anything that requires administrator privileges.

10. The test will take a few minutes to run, depending on how many files you have and the speed of the computer. A computer that's abnormally slow may take longer to run the test. While it's running, there will be nothing in the Terminal window and no indication of progress. Wait for the line "[Process completed]" to appear. If you don't see it within half an hour or so, the test probably won't complete in a reasonable time. In that case, close the Terminal window and report your results. No harm will be done.

11. When the test is complete, quit Terminal. The results will have been copied to the Clipboard automatically. They are not shown in the Terminal window. Please don't copy anything from there. All you have to do is start a reply to this comment and then paste by pressing command-V again.

If any private information, such as your name or email address, appears in the results, anonymize it before posting. Usually that won't be necessary.

12. When you post the results, you might see the message, "You have included content in your post that is not permitted." It means that the forum software has misidentified something in the post as a violation of the rules. If that happens, please post the test results on Pastebin, then post a link here to the page you created.

Note: This is a public forum, and others may give you advice based on the results of the test. They speak only for themselves, and I don't necessarily agree with them.

________________________________

I am having a similar issue with Firefox on my Mac Air. It intermittently freezes when using firefox and i have to shut to down manually and restart to work again. This happens every few days once.

Below is the last log i see before it crashed.

4/6/14 8:59:36.589 AM WindowServer[2823]: CGXSetCIFilterValues: Invalid filter 0

4/6/14 8:59:36.589 AM WindowServer[2823]: CGXSetWindowFilter: Invalid filter 0

4/6/14 8:59:36.736 AM firefox[2996]: CGSNewCIFilterByName

4/6/14 8:59:36.736 AM WindowServer[2823]: CGXSetCIFilterValues: Invalid filter 0

4/6/14 8:59:36.736 AM WindowServer[2823]: CGXSetWindowFilter: Invalid filter 0

4/6/14 8:59:58.840 AM com.apple.time[2904]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).

4/6/14 8:59:59.863 AM com.apple.time[2904]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).

4/6/14 8:59:59.875 AM com.apple.time[2904]: Interval maximum value is 946100000 seconds (specified value: 9223372036854775807).

4/6/14 9:01:04.332 AM plugin-container[66645]: CoreText performance note: Client called CTFontCreateWithName() using name "Times Roman" and got font with PostScript name "Times-Roman". For best performance, only use PostScript names when calling this API.

4/6/14 9:01:04.841 AM plugin-container[66645]: CoreText performance note: Client called CTFontCreateWithName() using name "Arial" and got font with PostScript name "ArialMT". For best performance, only use PostScript names when calling this API.

4/6/14 9:04:42.000 AM bootlog[0]: BOOT_TIME 1396789482 0

Please help.

Precisely the same problem on an iMac:

On a mid-2007 iMac, running latest Mavericks and FF, I have exactly the same problem as Chadaga: Three times in the past week, the Mac has frozen while running Firefox (always during a YouTube video, playing within a NYTimes page.) No error message appears; the Mac simply freezes and is unresponsive to keyboard and mouse. Plugging in a wired mouse has no effect. No crash report is generated on re-boot. Last few messages are exactly as Chadaga reports: CGX filter issues, followed by a batch of complaints about font names:

04/16/2014 3:43:48.377 PM firefox[526]: CGSNewCIFilterByName

04/16/2014 3:43:48.378 PM WindowServer[124]: CGXSetCIFilterValues: Invalid filter 0

04/16/2014 3:43:48.378 PM WindowServer[124]: CGXSetWindowFilter: Invalid filter 0

... (six font complaints, last of which is:)

04/16/2014 3:51:17.934 PM firefox[526]: CoreText performance note: Client called CTFontCreateWithName() using name "Arial Unicode MS" and got font with PostScript name "ArialUnicodeMS". For best performance, only use PostScript names when calling this API.

04/16/2014 3:54:38.000 PM bootlog[0]: BOOT_TIME 1397678078 0

I have the same problem, I have posted the bug report to Apple with all logs, but after few weeks they answered they don't have enough info to solve the problem.

And my MacBook Air still freez every day or two. 😟 This is worse than Windows 95.

I removed Firefox and my problems also stopped. I will just work with Safari. Until they fix the probelms i am not going back to Firefox. And i just realizd that most of the web sites work well with Safari. And i installed Chrome instead and it looks good so far.

Hi I also have the same problem. Can you please help!!!

Jun 24 09:48:44 MacBook-Air.local syncdefaultsd[12025]: *** -[IADomainCache init]: IA domains cache couldn't be read.

Jun 24 09:48:44 MacBook-Air.local syncdefaultsd[12025]: -[IAPluginManager allAListPlugins] [546] -- *** warning: we're on the slow path.

Jun 24 09:48:44 --- last message repeated 2 times ---

Jun 24 09:48:44 MacBook-Air.local Mail[7726]: CoreText CopyFontsForRequest received mig IPC error (FFFFFFFFFFFFFECC) from font server

Jun 24 09:49:14 --- last message repeated 3 times ---

Jun 24 09:49:34 MacBook-Air.local Mail[7726]: CFNetwork SSLHandshake failed (-9807)

Jun 24 09:49:38 MacBook-Air.local mDNSResponder[41]: PenaltyTimeForServer: PenaltyTime negative -35, (server penaltyTime -2001511708, timenow -2001511673) resetting the penalty

Jun 24 09:50:30 MacBook-Air.local Mail[7726]: [WEB BUNDLE] Could not execute script: ReferenceError: Can't find variable: MUIWebDocumentDisplayController_sharedInstance

Jun 24 09:50:35 MacBook-Air.local Mail[7726]: CFNetwork SSLHandshake failed (-9807)

Jun 24 09:51:37 MacBook-Air.local Mail[7726]: CFNetwork SSLHandshake failed (-9807)

Jun 24 09:52:24 MacBook-Air com.apple.launchd.peruser.501[297] (com.apple.FileStatsAgent): Throttling respawn: Will start in 4 seconds

Jun 24 09:52:24 MacBook-Air.local syncdefaultsd[12053]: *** -[IADomainCache init]: IA domains cache couldn't be read.

Jun 24 09:52:24 MacBook-Air.local syncdefaultsd[12053]: -[IAPluginManager allAListPlugins] [546] -- *** warning: we're on the slow path.

Jun 24 09:52:28 --- last message repeated 2 times ---

Jun 24 09:52:28 MacBook-Air com.apple.launchd.peruser.501[297] (com.apple.FileStatsAgent): Throttling respawn: Will start in 10 seconds

Jun 24 09:52:34 MacBook-Air.local WindowServer[141]: CGXSetWindowListSystemAlpha: Invalid window 5442 (index 0/1)

Jun 24 09:52:38 MacBook-Air.local Mail[7726]: CFNetwork SSLHandshake failed (-9807)

Jun 24 09:56:00 localhost bootlog[0]: BOOT_TIME 1403583960 0