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Firefox 33.0 lags in text typing/ selecting/ deleting & switching tabs

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After an automatic update from FF 32.0.3 to FF 33.0 on 17 Oct 2014, there had been a severe browser lag. Each user action or input results in a lag lasting 1–5 secs each, making the browser very difficult & unpleasant to use.

  • Typing Text: 1–2 secs before each letter appears
  • Highlighting Text (self-typed & web-rendered text): 2–3 secs before desired text is highlighted, & only partially (eg. For "impossible", can only highlight "imposs" or "ssible")
  • Deleting Text: 1–2 secs before each letter gets deleted
  • Switching Between Tabs: 2–5 secs for switch
  • Webpage Scrolling: 1–2 secs for each turn (for mouse wheel) or down-swipe (for touchpad)

All of the above issues occur everytime despite system restart, having only 1–2 tabs open, & even when FF is the only application running. I have not encountered the aforementioned problems in FF 32.0.3 & earlier FF versions, or in other browsers.

Other than FF being automatically updated to FF 33.0 on 17 Oct 2014, there was no other change (ie. no application install/ uninstall, no Windows update) that day or the preceding few days.

The lag disappears if FF 33.0 is run in safe mode with all add-ons disabled. But testing with add-ons disabled one by one does not isolate which add-on (if any) might be involved.

  • Laptop: Lenovo IdeaPad Y460
  • OS: Windows 7 SP 1
  • Display Adapters: ATI Mobility Radeon HD5650 (driver: 8.702.5.0 latest version), Intel HD Graphics (driver: 8.702.5.0 latest version)
  • Firefox User Experience: FF 33.0 (very bad lag), FF 32.0.3 & earlier (all function ok)
  • Browser Add-ons & Plugins: All latest versions

What I eventually did (a few days before reporting here after registering a user account): Since I was unable to resolve the problem, I performed a successful system restore, but the rolled-back browser (FF 32.0.3) was unable to launch (error code: "can't load XPCOM"). Subsequently, I resorted to installing a fresh copy of FF 32.0.3.


Since 17/18 Oct 2014, I have encountered a couple of reports about similar lag issues in FF 33.0 (& possibly since FF 32.0.* for some users). The collective symptoms & feedback suggest that it is probably not add-ons causing the issue, but some newly-created incompatibility or conflict with certain (or combinations of) display/ graphics adapter(s). So far, the reported affected adapters that I have come across include the ATI Mobility Radeon HD5000 series, Intel HD Graphics, & NVIDIA GeForce.

The temporary workaround appears to be disabling the hardware acceleration option. But since this is not a long-term solution, I am holding off updating to FF 33.0 (again) or to the just-released FF 33.0.1, until this issue is officially recognized & resolved.

Note:- Some users with text/ tab lagging problems also reported slowness wrt video &/or flash pages, which I can't verify because I had not tested FF 33.0 on video/ flash pages before reinstalling FF 32.0.3. (The text, tab & scrolling lags are enough to keep me away from browsing anything but the most basic webpages.)

Some Feedback References (for affected users & FF developers):

Possibly related to the same bug:-

After an automatic update from FF 32.0.3 to FF 33.0 on 17 Oct 2014, there had been a severe browser lag. Each user action or input results in a lag lasting 1–5 secs each, making the browser very difficult & unpleasant to use. <ul> <li><b>Typing Text:</b> 1–2 secs before each letter appears</li> <li><b>Highlighting Text (self-typed & web-rendered text):</b> 2–3 secs before desired text is highlighted, & only partially (eg. For "impossible", can only highlight "imposs" or "ssible")</li> <li><b>Deleting Text: </b> 1–2 secs before each letter gets deleted</li> <li><b>Switching Between Tabs:</b> 2–5 secs for switch</li> <li><b>Webpage Scrolling:</b> 1–2 secs for each turn (for mouse wheel) or down-swipe (for touchpad)</li> </ul> All of the above issues occur everytime despite system restart, having only 1–2 tabs open, & even when FF is the only application running. I have not encountered the aforementioned problems in FF 32.0.3 & earlier FF versions, or in other browsers. Other than FF being automatically updated to FF 33.0 on 17 Oct 2014, there was no other change (ie. no application install/ uninstall, no Windows update) that day or the preceding few days. The lag disappears if FF 33.0 is run in safe mode with all add-ons disabled. But testing with add-ons disabled one by one does not isolate which add-on (if any) might be involved. <ul> <li><b>Laptop:</b> Lenovo IdeaPad Y460</li> <li><b>OS:</b> Windows 7 SP 1</li> <li><b>Display Adapters:</b> ATI Mobility Radeon HD5650 (driver: 8.702.5.0 latest version), Intel HD Graphics (driver: 8.702.5.0 latest version)</li> <li><b>Firefox User Experience:</b> FF 33.0 (very bad lag), FF 32.0.3 & earlier (all function ok)</li> <li><b>Browser Add-ons & Plugins:</b> All latest versions</li> </ul> <b>What I eventually did</b> (a few days before reporting here after registering a user account): Since I was unable to resolve the problem, I performed a successful system restore, but the rolled-back browser (FF 32.0.3) was unable to launch (error code: "can't load XPCOM"). Subsequently, I resorted to installing a fresh copy of FF 32.0.3. <hr> Since 17/18 Oct 2014, I have encountered a couple of reports about similar lag issues in FF 33.0 (& possibly since FF 32.0.* for some users). The collective symptoms & feedback suggest that it is probably not add-ons causing the issue, but some newly-created <b>incompatibility or conflict with certain (or combinations of) display/ graphics adapter(s)</b>. So far, the reported affected adapters that I have come across include the ATI Mobility Radeon HD5000 series, Intel HD Graphics, & NVIDIA GeForce. The temporary workaround appears to be disabling the hardware acceleration option. But since this is not a long-term solution, I am holding off updating to FF 33.0 (again) or to the just-released FF 33.0.1, until this issue is officially recognized & resolved. Note:- Some users with text/ tab lagging problems also reported slowness wrt video &/or flash pages, which I can't verify because I had not tested FF 33.0 on video/ flash pages before reinstalling FF 32.0.3. (The text, tab & scrolling lags are enough to keep me away from browsing anything but the most basic webpages.) Some Feedback References (for affected users & FF developers): <ul> <li><b>Firefox UI is slow when typing or selecting text (after 33.0 update)</b> (Mozilla Support Forum, posts: 17 Oct–20 Oct 2014): https://support.mozilla.org/en-US/questions/1026328</li> <li><b>Bug 1087794: Firefox 33.0 exhibits weird behavior like slow typing, flash content blinking, problems with text selection</b> (Bugzilla@Mozilla, posts: 22 Oct–23 Oct2014): https://bugzilla.mozilla.org/show_bug.cgi?id=1087794</li> <li><b>Crippling lag since version 32</b> (Reddit, posts: 8 Oct–25 Oct 2014): https://www.reddit.com/r/firefox/comments/2iobft/crippling_lag_since_version_32</li> <li><b>Firefox v33.0: Closing tabs or switching between tabs sometimes hangs for 30-40 seconds</b> (Reddit, posts: 23 Oct 2014): https://www.reddit.com/r/firefox/comments/2k40zx/closing_tabs_or_switching_between_tabs_sometimes</li> </ul> Possibly related to the same bug:- <ul> <li><b>YouTube slowing after update</b> (Reddit, posts: 16 Oct–18 Oct 2014): https://www.reddit.com/r/firefox/comments/2jfkap/youtube_slowing_after_update</li> <li><b>Browser Lag (mostly when opening a tab or scrolling on webpage)</b> (Reddit, posts: 15 Oct–16 Oct 2014): https://www.reddit.com/r/firefox/comments/2jcxns/browser_lag</li> </ul>

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Ứng dụng

  • Chuỗi đại diện người dùng: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0

Thông tin chi tiết

FredMcD
  • Top 10 Contributor
4267 giải pháp 59836 câu trả lời
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Hello,

Try disabling graphics hardware acceleration. Since this feature was added to Firefox, it has gradually improved, but there still are a few glitches.

Start Firefox in Safe Mode {web link} While you are in safe mode;

Type about:preferences<Enter> in the address bar

Select Advanced > General. Look for and turn off Use Hardware Acceleration.

Poke around safe web sites. Are there any problems?

Then restart.

Hello, Try disabling graphics hardware acceleration. Since this feature was added to Firefox, it has gradually improved, but there still are a few glitches. '''[https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Start Firefox in Safe Mode]''' {web link} While you are in safe mode; Type '''about:preferences'''<Enter> in the address bar Select '''Advanced > General.''' Look for and turn off '''Use Hardware Acceleration'''. Poke around safe web sites. Are there any problems? Then restart.
cor-el
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  • Moderator
17567 giải pháp 158896 câu trả lời
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Create a new profile as a test to check if your current profile is causing the problem.

See "Creating a profile":

If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.

Create a new profile as a test to check if your current profile is causing the problem. See "Creating a profile": *https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles *http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems. *http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox