Hi, I'm reporting a bug with the rtw89 driver for Realtek RTL8852BE PCIe WiFi on kernel 6.14.0-29-generic. The WiFi fails to resume from suspend, requiring a reboot to regain connectivity. Hardware: - Device: Realtek Semiconductor Co., Ltd. RTL8852BE PCIe 802.11ax Wireless Network Controller - Subsystem: Hewlett-Packard Company RTL8852BE PCIe 802.11ax Wireless Network Controller - PCI ID: 01:00.0 Kernel Version: Linux HP-Laptop 6.14.0-29-generic #29~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Aug 14 16:52:50 UTC 2 x86_64 x86_64 x86_64 GNU/Linux Driver: - Out-of-tree rtw89 driver from https://github.com/morrownr/rtw89 - Module: rtw89_8852be_git - Firmware: rtw89/rtw8852b_fw-1.bin (version 0.29.128.0) Steps to Reproduce: 1. Connect to a WiFi network. 2. Suspend the system: `systemctl suspend` 3. Resume the system. 4. WiFi is disconnected and does not reconnect automatically. Manual reconnection fails until reboot. Expected Behavior: WiFi should reconnect after resume. Actual Behavior: WiFi remains disconnected. `iwconfig` or `nmcli` shows no connection. Logs show no errors on resume, but the device is unresponsive. Kernel Command Line: BOOT_IMAGE=/boot/vmlinuz-6.14.0-29-generic root=UUID=95dcee12-84fe-4ab6-a174-0de1f81679bc ro quiet splash mem_sleep_default=deep pcie_aspm=off pci=noaer pci_port_pm=off acpi_osi=Linux rtw89.disable_ps_mode=1 pci=noaer pcie_aspm=off rtw89.debug_mask=0x0001 vt.handoff=7 Driver Config (/etc/modprobe.d/rtw89.conf): # # Configuration file for the out-of-kernel rtw89 drivers # # Link: https://github.com/morrownr/rtw89 # options rtw89_core_git debug_mask=0x0 options rtw89_core_git disable_ps_mode=y options rtw89_pci_git disable_clkreq=y options rtw89_pci_git disable_aspm_l1=y options rtw89_pci_git disable_aspm_l1ss=y # Blacklist the in-kernel rtw89 drivers blacklist rtw89_8851bu blacklist rtw89_8851be blacklist rtw89_8851b blacklist rtw89_8852au blacklist rtw89_8852ae blacklist rtw89_8852a blacklist rtw89_8852b_common blacklist rtw89_8852bu blacklist rtw89_8852be blacklist rtw89_8852b blacklist rtw89_8852bte blacklist rtw89_8852bt blacklist rtw89_8852cu blacklist rtw89_8852ce blacklist rtw89_8852c blacklist rtw89_8922au blacklist rtw89_8922ae blacklist rtw89_8922a blacklist rtw89_core blacklist rtw89_usb blacklist rtw89_pci # Blacklist Larry's rtw89 drivers blacklist rtw89core blacklist rtw89pci blacklist rtw_8851b blacklist rtw_8851be blacklist rtw_8852a blacklist rtw_8852ae blacklist rtw_8852b blacklist rtw_8852be blacklist rtw_8852c blacklist rtw_8852ce blacklist rtw_8922a lspci -vvv Output for 01:00.0: 01:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8852BE PCIe 802.11ax Wireless Network Controller DeviceName: Realtek PCIe GBE Family Controller Subsystem: Hewlett-Packard Company RTL8852BE PCIe 802.11ax Wireless Network Controller Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 145 IOMMU group: 12 Region 0: I/O ports at 3000 [size=256] Region 2: Memory at 80500000 (64-bit, non-prefetchable) [size=1M] Capabilities: <access denied> Kernel driver in use: rtw89_8852be_git Kernel modules: rtw89_8852be, rtw89_8852be_git dmesg | grep -i rtw89 Output: [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-6.14.0-29-generic root=UUID=95dcee12-84fe-4ab6-a174-0de1f81679bc ro quiet splash mem_sleep_default=deep pcie_aspm=off pci=noaer pci_port_pm=off acpi_osi=Linux rtw89.disable_ps_mode=1 pci=noaer pcie_aspm=off rtw89.debug_mask=0x0001 vt.handoff=7 [ 0.033699] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-6.14.0-29-generic root=UUID=95dcee12-84fe-4ab6-a174-0de1f81679bc ro quiet splash mem_sleep_default=deep pcie_aspm=off pci=noaer pci_port_pm=off acpi_osi=Linux rtw89.disable_ps_mode=1 pci=noaer pcie_aspm=off rtw89.debug_mask=0x0001 vt.handoff=7 [ 3.261978] rtw89_core_git: loading out-of-tree module taints kernel. [ 3.261986] rtw89_core_git: module verification failed: signature and/or required key missing - tainting kernel [ 3.716552] rtw89_8852be_git 0000:01:00.0: loaded firmware rtw89/rtw8852b_fw-1.bin [ 3.716635] rtw89_8852be_git 0000:01:00.0: enabling device (0000 -> 0003) [ 3.718487] rtw89_8852be_git 0000:01:00.0: git commit [ 3.724889] rtw89_8852be_git 0000:01:00.0: Firmware version 0.29.128.0 (418a672d), cmd version 0, type 5 [ 3.724901] rtw89_8852be_git 0000:01:00.0: Firmware version 0.29.128.0 (418a672d), cmd version 0, type 3 [ 4.017001] rtw89_8852be_git 0000:01:00.0: chip rfe_type is 1 [ 4.046776] rtw89_8852be_git 0000:01:00.0: rfkill hardware state changed to enable [ 4.079934] rtw89_8852be_git 0000:01:00.0 wlo1: renamed from wlan0 Additional Notes: - This issue appears to have started with kernel 6.6+ due to changes in PCIe power management. - Disabling power save mode and ASPM in the driver config did not resolve it. - The out-of-tree driver is used to avoid issues with the in-kernel version. - Tested on kernels 6.5 and 6.14 with the same result. Please investigate and provide a fix. Let me know if you need more information. Thanks, Nader
