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#1 2020-11-02 10:11:35

nicholas
Member
From: Canada
Registered: 2012-07-22
Posts: 29

[SOLVED] Realtek Ethernet (r8169 driver) broken on Linux 5.9.2

Hello.

I upgraded to the 5.9.X kernel (failing on 5.9.2, unsure about 5.9.1) and now my ethernet driver is no longer willing to work for me.

The NIC is a RealtekRTL8110SC according to my motherboard product page.

I'm seeing a new error in dmesg

$ dmesg | grep genirq
[   18.003920] genirq: Flags mismatch irq 16. 00010080 (enp5s4) vs. 00002080 (uhci_hcd:usb5)
[   70.667308] genirq: Flags mismatch irq 16. 00010080 (enp5s4) vs. 00002080 (uhci_hcd:usb5)
[  138.624186] genirq: Flags mismatch irq 16. 00010080 (enp5s4) vs. 00002080 (uhci_hcd:usb5)

When I do have the cable plugged in and try to $ ip link set up I get

RTNETLINK answers: Device or resource busy

I'm not quite well versed enough to troubleshoot this on my own, but the following line appears to be missing in the dmesg output on the faulty kernel.

Oct 26 18:49:46 Juniper.home kernel: RTL8211B Gigabit Ethernet r8169-520:00: attached PHY driver [RTL8211B Gigabit Ethernet] (mii_bus:phy_addr=r8169-520:00, irq=IGNORE)

I have not mailed the linux kernel as I'm too inept with this to make any considerable point.

Is anyone else having issues?
Anything I can try or print for someone to read through?

Thanks for any suggestions

Last edited by nicholas (2020-11-03 20:41:18)

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#2 2020-11-03 17:58:27

nicholas
Member
From: Canada
Registered: 2012-07-22
Posts: 29

Re: [SOLVED] Realtek Ethernet (r8169 driver) broken on Linux 5.9.2

An upgrade to 5.9.3 fixes this.

[SOLVED]

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