Everything is gone, no Flathub.
Probably related to /var being moved on its own Btrfs subvolume
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Nah, the site states that upgrades are not affected by this change, only clean installs.
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I believe a fix is in the works and will be released with GNOME 42.2
EDIT: This was incorrect. Track actual fix in this bug report:
https://bugzilla.redhat.com/show_bug.cgi?id=2083715#c5
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Same issue here, also other users have pointed similiar problems with Silverblue 36 fedora subreddit: Reddit - Dive into anything
Nah, the site states that upgrades are not affected by this change, only clean installs.
I encountered this issue (as well as others) by upgrading from 35 Silverblue to 36.
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Adding the bug reports:
Bug 2083715 - [Silverblue] cannot create temporary file: /var/cache/rpm-ostree/solv/fedora-cisco-openh264.solv.XuN0fQ
Operating System Updates Unavailable: your operating system is no longer supported
This one was opened 20 days ago. I am amazed by the fact that it was not considered a release blocker. Silverblue should not have been released in this state, without even some basic QA.
It is reproducible on clean installs, however GNOME software starts to work after logging out and logging back in. Then it shows some updates but they break it for good:
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Fixed
The “cannot create temporary file” bug in Updates tab is definitely not fixed as I write this in September. Ran into the exact same bug on fresh Fedora Silverblue 36 install this month.