Correcting "affecting" value. ** Package changed: ubuntu-release-upgrader (Ubuntu) => linux-signed- hwe-6.5 (Ubuntu)
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed-hwe-6.5 in Ubuntu. https://bugs.launchpad.net/bugs/2049303 Title: MT7921 - IPv6 no longer working (Not receiving Multicast) Status in linux-signed-hwe-6.5 package in Ubuntu: New Bug description: After updating to kernel linux-image-6.5.0-14-generic, IPv6 stopped working with the MT7921 wifi card. No errors are logged, but when using tcpdump / wireshark to capture traffic, I can see the MT7921 card no longer appears to receive IPv6 Multicast (thus it never receives the Router Advertisements, etc.). Booting back to the previous kernel image (linux- image-6.2.0-39-generic) resolves the issue and IPv6 Multicast works fine and IPv6 connectivity works fine again. The system is configured to use the 22.04 HWE kernel to better support the AMD Advantage Platform hardware (ASUS ROG Strix G513QY). Steps to reproduce: 1. Have Ubuntu 22.04 LTS installed on a laptop with MT7921 Wifi adapter and connect it to a Dual-stack network leveraging Router Advertisements for IPv6. 2. Run it with HWE Kernel image linux-image-6.2.0-39-generic and observe the following: - IPv6 stateless autoconfiguration works and a public/global address is assigned. - Inbound IPv6 Multicast packets are seen when using tcpdump/wireshark. 3. Update the HWE Kernel to linux-image-6.5.0-14-generic and observe the following: - IPv6 only configures link-local address (fe80::) and no public/global address. - No inbound IPv6 multicast packets are seen when using tcpdump/wireshark. fludizz@pauwel:~$ lsb_release -rd Description: Ubuntu 22.04.3 LTS Release: 22.04 Network card in question: 05:00.0 Network controller: MEDIATEK Corp. MT7921 802.11ax PCI Express Wireless Network Adapter Subsystem: AzureWave Device 4680 Flags: bus master, fast devsel, latency 0, IRQ 83, IOMMU group 14 Memory at fc30300000 (64-bit, prefetchable) [size=1M] Memory at fc30400000 (64-bit, prefetchable) [size=16K] Memory at fc30404000 (64-bit, prefetchable) [size=4K] Capabilities: [80] Express Endpoint, MSI 00 Capabilities: [e0] MSI: Enable+ Count=1/32 Maskable+ 64bit+ Capabilities: [f8] Power Management version 3 Capabilities: [100] Vendor Specific Information: ID=1556 Rev=1 Len=008 <?> Capabilities: [108] Latency Tolerance Reporting Capabilities: [110] L1 PM Substates Capabilities: [200] Advanced Error Reporting Kernel driver in use: mt7921e Kernel modules: mt7921e fludizz@pauwel:~$ apt-cache policy linux-image-6.5.0-14-generic linux-image-6.5.0-14-generic: Installed: 6.5.0-14.14~22.04.1 Candidate: 6.5.0-14.14~22.04.1 Version table: *** 6.5.0-14.14~22.04.1 500 500 http://nl.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages 100 /var/lib/dpkg/status Note: The WiFi device is using the same firmware version on both kernels. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-6.5/+bug/2049303/+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
