Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Jei jums reikia pagalbos, užduokite naują klausimą.

Firefox on CentOS 7 thinks Firefox on CentOS 6 is old or not compatible.

  • 5 replies
  • 1 has this problem
  • 67 views
  • Paskiausią atsakymą parašė bobcatos

bobcatos
bobcatos
more options

I have a dual-boot workstation with CentOS 6 and CentOS 7. Both installations have the same version of Firefox, v68.2.0esr and both systems are fully updated. When I boot CentOS 7 after running CentOS 6, Firefox insists on making a new profile because it thinks it can't use the old profile. That requires me to sync, customise, set preferences, et cetera. That's a PITA.

I have a dual-boot workstation with CentOS 6 and CentOS 7. Both installations have the same version of Firefox, v68.2.0esr and both systems are fully updated. When I boot CentOS 7 after running CentOS 6, Firefox insists on making a new profile because it thinks it can't use the old profile. That requires me to sync, customise, set preferences, et cetera. That's a PITA.

Chosen solution

You can compare the compatibility.ini file in a profile used with Firefox on both OSs to see in what way they differ.

Skaityti atsakymą kartu su kontekstu 👍 0

All Replies (5)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Firefox stores the installation path of the Firefox version that last used this profile as a hash in profiles.ini and in installs.ini as a backup, so if you start Firefox in another OS then the path doesn't match and Firefox does complain.

See also:

bobcatos
bobcatos Klausimą uždavęs asmuo
more options

That was an interesting link and I think I understood some of it. But does it still make sense when the CentOS 6 and CentOS 7 installations are exactly the same version? Furthermore, why does it insist on a new profile only when going from C6 to C7 and not the other way? If all that still makes sense to you, I guess my bottom line is what kind of hackery can I perform to keep the C7 instance from demanding a new profile? FWIW, the currently used profile (on C6 at the moment) is vhaajjg6.default-default-2.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Chosen Solution

You can compare the compatibility.ini file in a profile used with Firefox on both OSs to see in what way they differ.

bobcatos
bobcatos Klausimą uždavęs asmuo
more options

I have now booted CentOS 7 and built a new profile for firefox (lyt9l8r1.default-default-3). Here is the compatibility file from CentOS 6: [Compatibility] LastVersion=68.2.0_20191101125725/20191101125725 LastOSABI=Linux_x86_64-gcc3 LastPlatformDir=/usr/lib64/firefox LastAppDir=/usr/lib64/firefox/browser

And from CentOS 7: LastVersion=68.2.0_20191023183522/20191023183522 LastOSABI=Linux_x86_64-gcc3 LastPlatformDir=/usr/lib64/firefox LastAppDir=/usr/lib64/firefox/browser

And the diff: < LastVersion=68.2.0_20191101125725/20191101125725 --- > LastVersion=68.2.0_20191023183522/20191023183522

bobcatos
bobcatos Klausimą uždavęs asmuo
more options

Okay, I think I've identified a bug. I booted back to CentOS 6 and sure enough, FF uses the same profile that C7 FF created, but stuck its own version/buildID into the LastVersion param of the compatibility.ini file. So I booted back to C7, and hacked the compatibility.ini file for that profile to change the LastVersion param to that of the C7 FF. Then FF started up without carps. So I take that to mean that the version comparison logic in the profile selection process is broken. I'm guessing it's comparing the whole version/buildID string and not just the version part. Thanks for giving me the clues to run that down.