*** This bug is a duplicate of bug 1848790 *** https://bugs.launchpad.net/bugs/1848790
About the problem of "there is no /dev/mmcblk0* device", I checked your dmesg, there are two places are weird the 1st one is about the raspberrypi-firmware, on my board, the dmesg will show: [ 0.100540] raspberrypi-firmware soc:firmware: Attached to firmware from 2019-08-15 12:03, variant start [ 0.110122] raspberrypi-firmware soc:firmware: Firmware hash is 9f8431fb7839c7f00f52b81f5822ddab2b31d0db And there are not errors about firmware, but your dmesg is different. the 2nd one is about mmc-bcm2835 driver, your kernel always report: mmc-bcm2835 fe300000.mmcnr: could not get clk, deferring probe That is different from my board, on my board, it only reports that message once, Then the driver could get the clk successfully. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-raspi2 in Ubuntu. https://bugs.launchpad.net/bugs/1848703 Title: Raspberry Pi 4 - USB Bus not detecting any devices Status in linux-raspi2 package in Ubuntu: Confirmed Bug description: Pi 4 new install. System boots up but USB bus is not working. Tried 3 keyboards no key presses detected, 2 usb memory drives don't show up in lsblk. output of $lspci 00:00.0 PCI bridge: Broadcom Inc. and subsidiaries Device 2711 (rev 10) 01:00.0 USB controller: VIA Technologies, Inc. VL805 USB 3.0 Host Controller (rev 01) output of $dmesg on pastebin here http://pastebin.com/h7A3n9xa or attached to this bug report. Not the only one experiencing bug. Another user created a post on the ubuntu forums: https://ubuntuforums.org/showthread.php?t=2429396&s=01a0c4b0cb4c05e605cbf9d41f660e08&p=13898142#post13898142 64bit raspberry pi 4&4 image pulled from https://ubuntu.com/download/iot/raspberry-pi page. Specifically http://cdimage.ubuntu.com/releases/19.10/release/ubuntu-19.10 -preinstalled-server-arm64+raspi3.img.xz To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1848703/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp