[Bug 1697800] Re: [regression] firefox dies with SIGILL on machines without SSE2

[Seth Arnold]

None of the upgrade tools are in a position to check architecture
features before installing a package. There may not be a happy solution
here.

Once you downgrade to a working version of Firefox you can use

sudo apt-mark hold firefox

to try to keep the updating tools from replacing it.

Note that doing this will prevent you from getting security updates for
Firefox.

To undo this operation you can run

sudo apt-mark unhold firefox


Do not undertake this step lightly -- running a known-insecure webbrowser is probably a bad idea.

Thanks

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Title:
  [regression] firefox dies with SIGILL on machines without SSE2

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