Intel wireless AC 9560 not working on Ubuntu 16.04 LTS Preempt RT kernel

ACast36 — Sat, 24 Aug 2019 03:05:28 GMT

I am using Ubuntu 16.04 LTS and am using a ASUS ROG Z390 I motherboard which has an Intel wireless AC 9560 WIFI. With a generic kernel (4.15.0-58-generic), the wifi works. I have patched PREEMPT RT kernels (I have tried with 4.16.7rt1 and 4.13.13rt5 kernels) and found that the wireless option on Ubuntu does not even appear.

When I run dmesg | grep iwl I get:

[ 5.001828] iwlwifi 0000:00:14.3: enabling device (0000 -> 0002)

[ 5.035994] iwlwifi 0000:00:14.3: loaded firmware version 33.610294.0 op_mode iwlmvm

[ 5.090448] iwlwifi 0000:00:14.3: Detected Intel(R) Dual Band Wireless AC 9560, REV=0x318

[ 5.097363] kernel BUG at drivers/net/wireless/intel/iwlwifi/pcie/rx.c:425!

[ 5.097366] Modules linked in: iwlmvm(+) mac80211 iwlwifi cfg80211 ucsi_acpi typec_ucsi typec acpi_als kfifo_buf mac_hid acpi_pad industrialio parport_pc ppdev lp parport autofs4 hid_generic usbhid uas usb_storage e1000e ptp ahci pps_core libahci wmi i2c_hid hid video

[ 5.097376] RIP: 0010:iwl_pcie_rxq_alloc_rbs+0x199/0x1f0 [iwlwifi]

[ 5.097385] _iwl_pcie_rx_init+0x23a/0x710 [iwlwifi]

[ 5.097388] iwl_pcie_rx_init+0x2d/0x3a0 [iwlwifi]

[ 5.097392] ? iwl_mvm_nic_config+0xe2/0x150 [iwlmvm]

[ 5.097395] iwl_trans_pcie_start_fw+0x290/0x6b0 [iwlwifi]

[ 5.097399] iwl_mvm_load_ucode_wait_alive+0xe5/0x300 [iwlmvm]

[ 5.097403] iwl_run_init_mvm_ucode+0x91/0x330 [iwlmvm]

[ 5.097406] ? iwl_run_init_mvm_ucode+0x91/0x330 [iwlmvm]

[ 5.097409] ? iwl_wait_init_complete+0x20/0x20 [iwlmvm]

[ 5.097412] iwl_op_mode_mvm_start+0x8f4/0xc10 [iwlmvm]

[ 5.097416] ? iwl_op_mode_mvm_start+0x8f4/0xc10 [iwlmvm]

[ 5.097420] _iwl_op_mode_start.isra.11+0x47/0xa0 [iwlwifi]

[ 5.097425] iwl_opmode_register+0x6c/0xd0 [iwlwifi]

[ 5.097428] iwl_mvm_init+0x35/0x1000 [iwlmvm]

[ 5.097456] RIP: iwl_pcie_rxq_alloc_rbs+0x199/0x1f0 [iwlwifi] RSP: ffffbcfa870b78d0

Is it that the Intel 9560 does not work with PREEMPT RT kernels ? What could be done to make it work with PREEMPT RT kernels ?

Re: Intel wireless AC 9560 not working on Ubuntu 16.04 LTS Preempt RT kernel

Wanner_G_Intel — Mon, 26 Aug 2019 21:13:03 GMT

Hello ACast36,

Thank you for posting on this Intel Community.

We support the use of the drivers only in the kernel version the driver was a part of.

1. For general questions about Intel Wi-Fi on Linux, email linuxwifi@intel.com.

2. To report a bug or issue, follow the guidance on the bugs and support page.

For more information, please refer to these support links:

Linux* Support for Intel® Wireless Adapters

Linux* Drivers and Linux Community Page

Wanner G.

Intel Customer Support Technician

A Contingent Worker at Intel

topic Intel wireless AC 9560 not working on Ubuntu 16.04 LTS Preempt RT kernel in Wireless

Intel wireless AC 9560 not working on Ubuntu 16.04 LTS Preempt RT kernel

Re: Intel wireless AC 9560 not working on Ubuntu 16.04 LTS Preempt RT kernel