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FS#60841 - [linux] Kernel 4.19.1 not working with Intel AC 9260 wireless card

Attached to Project: Arch Linux
Opened by Giulio (Pepppe) - Saturday, 17 November 2018, 17:11 GMT
Last edited by Doug Newgard (Scimmia) - Wednesday, 21 November 2018, 00:16 GMT
Task Type Bug Report
Category Kernel
Status Assigned
Assigned To Tobias Powalowski (tpowa)
Jan Alexander Steffens (heftig)
Architecture x86_64
Severity High
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 0%
Votes 0
Private No


Description: I installed Arch Linux on my new laptop and, when I issue "systemctl start NetworkManager" I get black screen and I have to restart my laptop by pressing and holding on power button.

Kernel 19.4.1 (not working)
Kernel 4.18.16 (working fine)

wifi card: INTELĀ® AC-9260 M.2 (1.73 Gbps, 802.11AC) + BT 5.0

This is the log:
with this error:
nov 17 15:55:19 arch kernel: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

Additional info:
* package version(s)
* config and/or log files etc.

Steps to reproduce: systemctl start NetworkManager
This task depends upon

Comment by loqs (loqs) - Saturday, 17 November 2018, 17:37 GMT
nov 17 15:55:25 arch wpa_supplicant[2814]: wlp2s0: WPA: Failed to set PTK to the driver (alg=3 keylen=16 bssid=0c:b6:d2:3b:33:8b)
nov 17 15:55:25 arch kernel: wlp2s0: deauthenticating from 0c:b6:d2:3b:33:8b by local choice (Reason: 1=UNSPECIFIED)
nov 17 15:55:25 arch wpa_supplicant[2814]: wlp2s0: CTRL-EVENT-DISCONNECTED bssid=0c:b6:d2:3b:33:8b reason=1 locally_generated=1
nov 17 15:55:25 arch wpa_supplicant[2814]: wlp2s0: WPA: 4-Way Handshake failed - pre-shared key may be incorrect
nov 17 15:55:25 arch wpa_supplicant[2814]: wlp2s0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="D-Link-3B338A" auth_failures=1 duration=10 reason=WRONG_KEY

If NetworkManager is disabled and you do not start it is the following present in dmesg and do graphics function correctly?
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
Comment by Giulio (Pepppe) - Saturday, 17 November 2018, 18:38 GMT
As you asked, I disabled NetworkManager and reinstalled 4.19.2 kernel, so rebooted and, after a few minutes, I got the journal log Graphics worked fine and no sign of error in journal
Comment by loqs (loqs) - Saturday, 17 November 2018, 18:53 GMT
That is unexpected that a networking issue manages to cause a fault in the GPU.
If you are prepared to try a package from an unofficial repository contains the linux-mainline package currently at 4.20-rc2 to see if the issue has already been fixed upstream.
Or you could build the linux-mainline or linux-git package from AUR.
Alternatively you could bisect between 4.18 and 4.19 to find the cause.
Comment by Giulio (Pepppe) - Sunday, 18 November 2018, 16:05 GMT
I installed 4.20 kernel, but no joy! Same issue, so I went back to 4.18 :-(
Comment by Elias Rydberg (Rydberg95) - Tuesday, 12 February 2019, 16:24 GMT
I have experienced the same problem. My workaround is booting with the following kernel parameter:


I could reproduce it with just using wpa_supplicant and dhcpcd (followed the steps in the installation guide) and without using a GUI. The screen started flickering for a while, and then went pitch black.