> For WiFi, I remember I found the firmware from someplace, then the WiFi worked.
> ubuntu@ubuntu:~$ ls /lib/firmware/brcm/brcmfmac43455-sdio.* -la > -rw-r--r-- 1 root root 600487 Sep 1 05:45 > /lib/firmware/brcm/brcmfmac43455-sdio.bin > -rw-r--r-- 1 root root 14036 Sep 1 05:45 > /lib/firmware/brcm/brcmfmac43455-sdio.clm_blob > -rw-r--r-- 1 root root 2054 Sep 1 05:45 > /lib/firmware/brcm/brcmfmac43455-sdio.raspberrypi,4-model-b.txt > -rw-r--r-- 1 root root 2054 Sep 1 05:45 > /lib/firmware/brcm/brcmfmac43455-sdio.txt > ubuntu@ubuntu:~$ ls /lib/firmware/brcm/brcmfmac43455-sdio.* | xargs md5sum > 963eb0d4903040974ee88b4f85cb1f4f /lib/firmware/brcm/brcmfmac43455-sdio.bin > c5aeca0e33de4ae870986c517963fef7 > /lib/firmware/brcm/brcmfmac43455-sdio.clm_blob > 7b983812a8aee7bf701460436c686226 > /lib/firmware/brcm/brcmfmac43455-sdio.raspberrypi,4-model-b.txt > 7b983812a8aee7bf701460436c686226 /lib/firmware/brcm/brcmfmac43455-sdio.txt Most of those hashes match the latest-but-one variant of the wifi firmware from Raspbian. Unfortunately, updating to the very latest is tricky for us as the firmware blobs appear split between linux-firmware (which holds the *.bin files) and linux-firmware-raspi (which holds the *.txt and *.clm_blob) files. After a bit of experimentation I've found that updating just the 43455 clm_blob and txt files fixes wifi for the Pi4 without breaking wifi on any of the earlier versions. I'll open a separate ticket for this with a link to a PPA package and see if I can get it sponsored. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1847500 Title: Full RAM on Pi4 isn't accessible when using u-boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/u-boot/+bug/1847500/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
