Hi, Thanks for testing and sending this report! This patch relies heavily on the functions exposed by the firmware. My first guess would be that some of these may not be implemented correctly by the manufacturer. Could you share more information on this specific device? Do you have any link to the manufacturer website (I found [1] but it is based on an ARM CPU)? Do you have the option to update your firmware? Is a copy of the firmware available from the manufacturer? On your side, I assume no error message got displayed on the screen when booting. Would you be able to try to boot in an UEFI shell [2] and execute the command "dh -v"? Thanks, Thiebaud [1] https://www.gp-electronic.nl/product/7inchtablet [2] https://wiki.archlinux.org/index.php/Unified_Extensible_Firmware_Interface#UEFI_Shell On Tue, Mar 6, 2018 at 5:00 PM Jeremy Cline <jeremy@xxxxxxxxxx> wrote: > Hi folks, > Commit 33b6d03469b2 ("efi: call get_event_log before ExitBootServices") > causes my GP-electronic T701 tablet to hang when booting. Reverting the > patch series or hiding the TPM in the BIOS fixes the problem. > I've never fiddled with TPMs before so I'm not sure what what debugging > information to provide. It's got an Atom Z3735G and the UEFI firmware is > InsydeH20 version BYT70A.YNCHENG.WIN.007. > Regards, > Jeremy
