-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 January 30, 2020 9:24 PM, "Andrey Arapov' via qubes-users" <qubes-users@googlegroups.com> wrote:
> -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > Hi all, > > I've been having issues with making BCM43602 work and figured a sequence > which makes it working and > working well - meaning it connects to both 2.4GHz & 5GHz networks and is > working at its full speed > without any issue. > > Here is what helped me to make BCM43602 work again on my MacBookPro14,3 > (mid-2017). > > 1. start dom0 with ``qubes.skip_autostart``. > > 2. start ``sys-net`` in the following sequence: > > ``` > qvm-start sys-net > sleep 3 > sudo xl pci-attach sys-net '03:00.0,permissive=1' > qvm-run -p sys-net "sudo cp ~/brcmfmac43602-pcie.txt > /usr/lib/firmware/brcm/brcmfmac43602-pcie.txt" > qvm-run -p sys-net "echo 1 | sudo tee /sys/bus/pci/rescan" > ``` > > Enjoy your WiFi! > > The ``brcmfmac43602-pcie.txt`` file you can get here > https://bugzilla.kernel.org/show_bug.cgi?id=193121#c52 - see an "attachment > 285753" from Simon > Siebert on ``2019-11-02 16:41:15 UTC`` > > Make sure to set ``macaddr=00:90:4c:0d:f4:3e`` in that file! It's the default > mac address which is > coming from the firmware. > > Refs. > - - https://groups.google.com/forum/#!msg/qubes-users/DT_uIiiWJd8/cHFiFle1DQAJ > - - https://bugzilla.kernel.org/show_bug.cgi?id=193121#c52 > - - https://nixaid.com/linux-on-macbookpro > > Kind regards, > Andrey Arapov > > P.S. > I've also noticed that if I remove brcmfmac kernel driver from the sys-net > (domU), and modprobe it > back again => the card will never work again. > I've tried resetting the PCI bus, removing the card, etc.. only reboot helps. > -----BEGIN PGP SIGNATURE----- > > iHUEARYIAB0WIQRDMZ/b1AtG/U4LjuKQdtXmsxrpnAUCXjM7VQAKCRCQdtXmsxrp > nKe2AP9EYxXcKGJ++NDlJta/DVT9mtSx6wvzfhLNKxBW+OfyOwEAxp9HN6umbCUD > vo5XYjB9Y31y5Noagb3K0s8sY45bzQI= > =5+io > -----END PGP SIGNATURE----- I have been tinkering more with the BCM43602 wireless adapter these days and have figured a way so I can restart ``sys-net`` without having to reboot. ``` $ sudo lspci -t -nn -v +-1c.0-[03]----00.0 Broadcom Inc. and subsidiaries BCM43602 802.11ac Wireless LAN SoC [14e4:43ba] ``` The whole trick was to **unbind** the parent PCI bridge off the ``pcieport`` (PCI Express Port Bus Driver), after which I could [restart](https://github.com/QubesOS/qubes-issues/issues/3734#issuecomment-580440403) ``sys-net`` as many times as I want without breaking BCM43602 adapter: ``` echo 0000:00:1c.0 | sudo tee /sys/bus/pci/drivers/pcieport/unbind ``` What's more interesting and is related to [my previous observations](https://github.com/QubesOS/qubes-issues/issues/3734#issuecomment-580654893) is that if I don't unbind the parent PCI bridge off the ``pcieport`` and then restart the ``sys-net`` (attaching the ``03:00.0`` as [described before](https://github.com/QubesOS/qubes-issues/issues/3734#issuecomment-580440403)), the BCM43602 adapter's subsystem changes the device number from ``0x0173`` to ``0x0157`` ``` 03:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM43602 802.11ac Wireless LAN SoC [14e4:43ba] (rev 02) Subsystem: Apple Inc. Device [106b:0173] ===>>> [106b:0157] !!! ``` But as soon as I **unbind** the parent PCI bridge off the ``pcieport`` again, restart ``sys-net``, the BCM43602 adapter is working back again, even despite that its subsystem device number is now ``0x0157`` instead of ``0x0173``. One more observation is that when I remove the BCM43602 adapter device ``echo 1 | sudo tee /sys/bus/pci/devices/0000\:00\:1c.0/0000\:03\:00.0/remove`` and issue a rescan command to its parent PCI bridge ``echo 1 | sudo tee /sys/bus/pci/devices/0000\:00\:1c.0/rescan`` the BCM43602 adapter (``03:00.0``) will become visible again **only** if the parent PCI bridge was **unbound** from the ``pcieport``. Refs. - - https://github.com/QubesOS/qubes-issues/issues/3734 Kind regards, Andrey Arapov -----BEGIN PGP SIGNATURE----- iHUEARYIAB0WIQRDMZ/b1AtG/U4LjuKQdtXmsxrpnAUCXj20EgAKCRCQdtXmsxrp nLE8AQC3DjkVD+K23MN0/aaz1027W/mVDRtklxaKh0wVvS8DoQEA+o+3qxs2likI ViGSy9UIE5wvcD3DEbIMTRPCyVjZDQw= =8nr8 -----END PGP SIGNATURE----- -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/cd1a2aedd266f023d89f6b734fae74ca%40nixaid.com.
