Due to Bug#1203748 ("Laptop very slow in battery mode (Lenovo Thinkpad T470) ...") I need a BIOS update for my Thinkpad T470.
I will try to do a BIOS update in Live system, since it's only possible via
fwupdmgr, which unfortunately only runs in plain
UEFI mode, and the system has been installed in
CSM mode (
Legacy layer running on top of
BIOS images and instructions here
So far I was able to run
fwupdmgr to run the firmware update on a
openSUSE 15.4 XFCE Live system installed on a USB stick after resizing its
EFI/BOOT partition. This creates the following files structure on
EFI/BOOT partition of the USB stick.
It also creates a new boot entry
Linux-Firmware-Updater. Unfortunately nothing happens when selecting this entry. Probably the machine is not able to run
UEFI programs from a USB Stick or alike.
It might be possible to run this
fwupdx64.efi with the appropriate options from an
UEFI shell. Unfortunately this machine doesn't offer an
UEFI shell. :-( Probably the 'easiest' would be to convert my
CSM system to an
UEFI system by adding a
EFI/BOOT partition. I have installed the sytem with an
LVM partition, so this might even be possible with
LVM's resize tools.
Success !!! (Wednesday/Thursday)
Thanks to the great assistance of my colleague
Raymund W. I was finally able to perform the firmware update successfully. The trick was to create an USB stick with
GPT table and
EFI/Boot partition with sufficient space (e.g. 100 instead of 20 MB) instead of using the
MBR variant created from the
Live ISO. So
fwupd could create the correct Boot entries.
System is now running with current
We also switched the system to run as
UEFI system. No longer need to run it in
CSM mode. :-)
Final step (Friday)
Leap 15.3 to
Leap 15.4. So far things are looking good. :-)
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