I pulled the current 'master' from Linus' tree, and noticed that there seems to be an MMC error during boot. [ 4.120239] VUSB3V1: disabling [ 4.131256] Waiting for root device /dev/mmcblk1p2... [ 4.157470] mmc2: new high speed SDIO card at address 0001 [ 5.354827] mmc1: card never left busy state [ 5.359283] mmc1: error -110 whilst initialising SD card It's at this point, i need to eject the card, and re-insert it in order to continue. [ 9.513244] mmc1: host does not support reading read-only switch, assuming write-enable [ 9.525329] mmc1: new high speed SDHC card at address e624 [ 9.536315] mmcblk1: mmc1:e624 SS04G 3.69 GiB [ 9.562469] mmcblk1: p1 p2 [ 9.637451] EXT4-fs (mmcblk1p2): mounted filesystem with ordered data mode. Opts: (null) [ 9.646240] VFS: Mounted root (ext4 filesystem) on device 179:2. It then carries on just fine. I went back to 4.19, and it's just fine, so something happened. Before I bisect, I was curious to see if anyone had seen this already. I don't want to duplicate an effort, but 4.20 is right around the corner. adam