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Tue, 2 Dec 2025 21:17:24 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 5B2LHObl019820 for net@FreeBSD.org; Tue, 2 Dec 2025 21:17:24 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 279245] igc(4) I226 (and I225) TX hangups Date: Tue, 02 Dec 2025 21:17:23 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 13.2-RELEASE X-Bugzilla-Keywords: IntelNetworking X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: madler@tapil.com X-Bugzilla-Status: Closed X-Bugzilla-Resolution: Not A Bug X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D279245 Michael Adler changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |madler@tapil.com --- Comment #8 from Michael Adler --- (In reply to Dr. Uwe Meyer-Gruhl from comment #7) I finally figured out the problem on my ASUS PN65 with I226-V and it isn't solved by any of the suggestions so far, but is related. All this on 14.3 a= nd the igc driver. Setting hw.pci.enable_aspm=3D0 in loader.conf did not work. Updating the I2= 26-V firmware to from V2.17 to V2.32 using nvmupdate64e as described at https://forum.opnsense.org/index.php?topic=3D48695.0 did not work, though i= t may have been necessary. I'm not going to revert to 2.17 to test that. I discovered that the igc device's ASPM capability in the PCIe link control capability register remained enabled even with hw.pci.enable_aspm cleared. I see no setting in this ASUS BIOS to disable ASPM for the device. There are configurations for the CPUs, but I don't see other PCIe settings. The BIOS = for this machine is dumbed down. Shouldn't the kernel or igc driver clear the ASPM enable bits in the PCIe l= ink control register when enable_aspm is 0? Given that the universal solution to igc problems is disabling ASPM, should= the igc driver have a default config that forces the link control to disable AS= PM? I wrote a script that walks the PCIe config space, finds the control regist= er and clears the bits that is now running during boot. So far the machine is = both stable and finally seeing expected throughput. --=20 You are receiving this mail because: You are the assignee for the bug.=