netdev - [BUG] igc: ASPM causes I226-V NIC to drop after idle

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Message-ID: <re7_7zYnqyVPXjEEGmJepF9vbNV8u8ul2Cspq1ZrUmrc3gXuEgwm9Wi8Jk6kY63HpRYK3hJzyt0N0f-430xyADYxkeyaR3vAb-YVhsE0u6k=@protonmail.com>
Date: Mon, 01 Sep 2025 20:45:45 +0000
From: Preindl <preindl@...tonmail.com>
To: "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Cc: "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>
Subject: [BUG] igc: ASPM causes I226-V NIC to drop after idle

Hello,

I am seeing an issue with the Intel I226-V Ethernet controller on an ASUS ProArt X870E motherboard. When PCIe Active State Power Management (ASPM) is enabled, the NIC becomes unavailable after a period of inactivity. Disabling ASPM avoids the problem.

This looks like a hardware/firmware issue, but since it is easily reproducible (there are several forum discussions), it may warrant a kernel quirk in the igc driver to disable ASPM for this firmware (or device?).

---

Hardware:
- Motherboard: ASUS ProArt X870E
- NIC: Intel I226-V [8086:125c] (rev 06)
- Subsystem: [1043:8867]
- Firmware version (from ethtool -i): 2023:889d

Software:
- OS: Debian GNU/Linux 13 (trixie)
- Kernel: Linux 6.12.41+deb13-amd64
- Driver: igc

---

Steps to reproduce (logs attached)
1. Boot system with default PCIe ASPM enabled.
2. Leave the box/NIC idle for some time.
3. NIC disappears (reappears after reboot)

Workaround:
- Booting with pcie_aspm=off (or disabling ASPM in BIOS) keeps the NIC stable.

Expected:
- NIC should remain functional with ASPM enabled.

Actual:
- NIC crashes at/after idle when ASPM is enabled.

---

Please let me know if additional information or testing would help.
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