Recently, I read that a kernel update in Fedora 32 had resolved a problem with HDMI audio and Nouveau video drivers (https://bugzilla.kernel.org/show_bug.cgi?id=207223). My plan was to use the “live” distribution of Fedora 33 to test HDMI audio. I burned a USB stick, and tried to boot. “Selected boot image did not authenticate.” Worse still, the UEFI order in my motherboard was changed: the system booted to Windows. I had to use a UEFI utility to change my UEFI boot device order to restore the multiple-boot menu offering a choice between Linux and Windows.
Live distributions should be safer than this
Live distributions are supposed to be a safe way to evaluate an operating system. Now I cannot recommend that somebody try a Fedora USB stick until I have tested that version.
UEFI is important
I use UEFI/Secure Boot on my laptops because it enables multiple-boot menus with grub2. This allows me to see a menu at boot time offering a choice between Linux and Windows. UEFI is also important because some modern system like NVMe drives require UEFI.
The worst part is… they knew
https://bugzilla.redhat.com/show_bug.cgi?id=1883609#c73
Adam Williamson 2020-10-22 21:42:08 UTC
“To clear up blocker status here: after FESCo retracted it as a FESCo blocker – see https://bugzilla.redhat.com/show_bug.cgi?id=1883609#c66 – this was voted on under the normal criteria process in the Go/No-Go meeting today:
and rejected as a blocker more or less on the grounds that the majority of voters didn’t think enough people would run into it before Fedora 34 release, and that we can potentially release a subset or full set of rebuilt/updated images at some point during the 33 cycle if it is considered necessary.
Our current best understanding is that Ubuntu was shipping the DBX update to users (whether all or some subset) at some point but has now stopped doing that, and Microsoft will not ship the DBX update until Q2 2021.”