** Description changed: + [SRU Justification] + + [Impact] + + RTL8821CE RFE Type 2 PCIE module is not supported by new rtw88 driver + in kernel version v5.11 or older. Dmesg gives: + + rtw_8821ce 0000:01:00.0: enabling device (0000 -> 0003) + rtw_8821ce 0000:01:00.0: Firmware version 24.8.0, H2C version 12 + rtw_8821ce 0000:01:00.0: rfe 2 isn't supported + rtw_8821ce 0000:01:00.0: failed to setup chip efuse info + rtw_8821ce 0000:01:00.0: failed to setup chip information + + Such modules are previosly covered by rtl8821ce-dkms. + + [Fix] + + Patch set + https://lore.kernel.org/linux-wireless/20210202055012.8296-1-pks...@realtek.com/ + landed in v5.12-rc1, as well as WLAN firmware updates in commit + c5e3240eff0f ("rtw88: RTL8821C: Update firmware to v24.8"), which is + already available in Hirsute version 1.195. Bluetooth firmware should + have been the latest 0x829a_7644 in both Focal/Hirsute. + + [Test Case] + + With patched kernel, wlan interface should be up and running: + + rtw_8821ce 0000:01:00.0: enabling device (0000 -> 0003) + rtw_8821ce 0000:01:00.0: Firmware version 24.8.0, H2C version 12 + rtw_8821ce 0000:01:00.0 wlp1s0: renamed from wlan0 + + [Where problems could occur] + + Previously this hardware piece can only be driven by external DKMS + modules, so with this driver patched, users can now use in-tree driver, + but may experience the difference between them in power consumption or + feature supportness. + + [Other Info] + + While Bionic/Focal LTS is still using rtl8821ce-dkms for RFE Type 2 + cards, there is no plan to introduce such change to them. So they'll be + upgraded only at the next point release with kernel >= 5.11. + + ========== original bug description ========== + 8821ce is being upstreamed in https://lore.kernel.org/linux- wireless/20200603094218.19942-1-yhchu...@realtek.com/ . To backport it to ubuntu kernel so that we may obsolete the usage of rtl8821ce-dkms from https://bugs.launchpad.net/ubuntu/+source/rtl8821ce .
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1885862 Title: Add in-tree Realtek 8821CE wireless module support To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1885862/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
