Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

Hello @FredMcD,

Thank you for the reply. Unfortunately the issue is still evident even in Safe Mode ('restart with add-ons disabled')

Start your Computer in safe mode with network support. Then start Firefox. Try Safe websites. Is the problem still there?

http://encyclopedia2.thefreedictionary.com/Linux+Safe+Mode Starting Any Computer In Safe Mode; Free Online Encyclopedia

Hi Fred,

The Linux 'safe mode' works differently from Windows -- it is a text interface only. Starting up a graphic application such as Firefox would not be possible.

Oops, sorry.

Use these links to create a new profile. Use this new profile as is. Is the problem still there?

http://kb.mozillazine.org/Profile_folder_-_Firefox#Navigating_to_the_profile_folder

https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

Type about:profiles<enter> in the address bar.

Fred, I tried creating a new profile including completely uninstalling, manually removing all profile related files, and then reinstalling -- and the issue remains.

Today I came across a video which shows what appears to be the exact same issue on the video creator's post. https://www.youtube.com/watch?v=fsqXYgRNqGQ&feature=youtu.be&t=605

I watched the clip. It's about someone describing his opinion on the software.

You can try to disable hardware acceleration in Firefox.

• Options/Preferences -> General: Performance
  remove checkmark: [ ] "Use recommended performance settings"
  remove checkmark: [ ] "Use hardware acceleration when available"
• https://support.mozilla.org/en-US/kb/performance-settings

Close and restart Firefox after modifying the setting to make the change effective.

• https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems

cor-el,

No joy. I disabled hardware acceleration and restarted Firefox but I still see the multiple screen draws / flickers when the application is launched. I also disabled all themes and Add-ons and restarted Firefox, but the issue remained.

FredMcD,

True -- but the video's creator (at 10m8s) seems to have the same issue as me.

Hi, the video is of no use, it looks like it is working just fine and it is fast.

Have you tried installing with the Linux compile from the Firefox Full Version page rather than from where ever you get it from as have not said :

• https://www.mozilla.org/firefox/all/

Suggest also to copy/paste about:support into the address bar and see what is going on in there and check if any issues with your Video Card Drivers.

Please let us know if this solved your issue or if need further assistance.

Pkshadow,

When the video creator opens Firefox, do you see how it first opens un-maximized, then immediately redraws as maximized? I see the same issue (assuming this is not by design). Firefox is the only application I've seen, in recent memory, to do this.

I took a look at about:support and nothing stood out as unusual. If you're interested in reviewing what I saw, I've included it below:

Application Basics

Name: Firefox Version: 59.0.2 Build ID: 20180326160923 User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:59.0) Gecko/20100101 Firefox/59.0 OS: Linux 4.13.0-37-generic Multiprocess Windows: 1/1 (Enabled by default) Web Content Processes: 2/4 Stylo: content = true (enabled by default), chrome = false (disabled by default) Google Key: Found Mozilla Location Service Key: Missing Safe Mode: false

Crash Reports for the Last 3 Days

All Crash Reports

Firefox Features

Name: Activity Stream Version: 2018.02.17.0026-173e2795 ID: activity-stream@mozilla.org

Name: Application Update Service Helper Version: 2.0 ID: aushelper@mozilla.org

Name: Firefox Screenshots Version: 25.0.0 ID: screenshots@mozilla.org

Name: Follow-on Search Telemetry Version: 0.9.6 ID: followonsearch@mozilla.com

Name: Form Autofill Version: 1.0 ID: formautofill@mozilla.org

Name: Photon onboarding Version: 1.0 ID: onboarding@mozilla.org

Name: Pocket Version: 1.0.5 ID: firefox@getpocket.com

Name: Shield Recipe Client Version: 80 ID: shield-recipe-client@mozilla.org

Name: Web Compat Version: 1.1 ID: webcompat@mozilla.org

Extensions

Name: GNOME Shell integration Version: 10.1 Enabled: true ID: chrome-gnome-shell@gnome.org

Name: HTTPS Everywhere Version: 2018.3.13 Enabled: true ID: https-everywhere@eff.org

Name: StartPage.com — Private Search Engine Version: 1.1.2 Enabled: true ID: {20fc2e06-e3e4-4b2b-812b-ab431220cada}

Name: uBlock Origin Version: 1.15.18 Enabled: true ID: uBlock0@raymondhill.net

Security Software

Type:

Type:

Graphics

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