This bug is awaiting verification that the linux- aws-5.15/5.15.0-1046.51~20.04.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux- aws-5.15' to 'verification-done-focal-linux-aws-5.15'. If the problem still exists, change the tag 'verification-needed-focal-linux-aws-5.15' to 'verification-failed-focal-linux-aws-5.15'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-aws-5.15-v2 verification-needed-focal-linux-aws-5.15 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1997200 Title: Mediatek WLAN RZ616(MT7922) SAR table control Status in HWE Next: Fix Released Status in linux package in Ubuntu: In Progress Status in linux-firmware package in Ubuntu: Invalid Status in linux-oem-5.17 package in Ubuntu: Invalid Status in linux source package in Jammy: Fix Released Status in linux-firmware source package in Jammy: Fix Released Status in linux-oem-5.17 source package in Jammy: Fix Released Status in linux source package in Kinetic: Fix Released Status in linux-firmware source package in Kinetic: Fix Released Status in linux-oem-5.17 source package in Kinetic: Invalid Bug description: [Impact] In order to make sure the amount of RF energy being absorbed by our bodies is safe according to the FCC’s guidelines, products must undergo and pass SAR testing. [Fix] Add ACPI SAR table control to pass the testing. [Test] the unit is 0.5dBm in following: Without the SAR table control: $ sudo cat /sys/kernel/debug/ieee80211/phy0/mt76/txpower_sku | grep -i user CCK (user) : N.A N.A N.A N.A OFDM (user) : 40 40 40 40 40 40 40 40 HT20 (user) : 40 40 40 40 40 40 40 40 HT40 (user) : 40 40 40 40 40 40 40 40 40 VHT20 (user) : 40 40 40 40 40 40 40 40 40 40 0 0 VHT40 (user) : 40 40 40 40 40 40 40 40 40 40 0 0 VHT80 (user) : 40 40 40 40 40 40 40 40 40 40 0 0 VHT160 (user) : 40 40 40 40 40 40 40 40 40 40 0 0 HE26 (user) : 40 40 40 40 40 40 40 40 40 40 40 40 HE52 (user) : 40 40 40 40 40 40 40 40 40 40 40 40 HE106 (user) : 40 40 40 40 40 40 40 40 40 40 40 40 HE242 (user) : 40 40 40 40 40 40 40 40 40 40 40 40 HE484 (user) : 40 40 40 40 40 40 40 40 40 40 40 40 HE996 (user) : 40 40 40 40 40 40 40 40 40 40 40 40 HE996x2 (user) : 40 40 40 40 40 40 40 40 40 40 40 40 After enabled SAR table control: $ sudo cat /sys/kernel/debug/ieee80211/phy0/mt76/txpower_sku | grep -i user CCK (user) : N.A N.A N.A N.A OFDM (user) : 26 26 26 26 26 26 26 26 HT20 (user) : 26 26 26 26 26 26 26 26 HT40 (user) : 26 26 26 26 26 26 26 26 26 VHT20 (user) : 26 26 26 26 26 26 26 26 26 26 0 0 VHT40 (user) : 26 26 26 26 26 26 26 26 26 26 0 0 VHT80 (user) : 26 26 26 26 26 26 26 26 26 26 0 0 VHT160 (user) : 26 26 26 26 26 26 26 26 26 26 0 0 HE26 (user) : 26 26 26 26 26 26 26 26 26 26 26 26 HE52 (user) : 26 26 26 26 26 26 26 26 26 26 26 26 HE106 (user) : 26 26 26 26 26 26 26 26 26 26 26 26 HE242 (user) : 26 26 26 26 26 26 26 26 26 26 26 26 HE484 (user) : 26 26 26 26 26 26 26 26 26 26 26 26 HE996 (user) : 26 26 26 26 26 26 26 26 26 26 26 26 HE996x2 (user) : 26 26 26 26 26 26 26 26 26 26 26 26 Also done stress test with iperf, all works fine. [Where problems could occur] It may break mt7922 driver. These commits are already in oem-6.0 and unstable. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1997200/+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
