# Instability on I225-V **URL:** \ **Category:** Quality of Service\ **Created:** [25 October 2025 02:16 UTC](https://community.ipfire.org/t/instability-on-i225-v/15189 "2025-10-25T02:16:39Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![melon](https://community.ipfire.org/user_avatar/community.ipfire.org/melon/32/12858_2.png) [@melon](https://community.ipfire.org/u/melon)\ **Post date:** [25 October 2025 02:16 UTC](https://community.ipfire.org/t/instability-on-i225-v/15189/1 "2025-10-25T02:16:39Z")
Hello, I’ve been having an intermittent issue for several months with my NIC dropping, seemingly at random. I have not yet found any metric that correlates with the issue. Load, temps and memory utilization on the system are all low. I was wondering if there was anything else that I could try to improve the adapter’s stability. Logs: ```plaintext 19:36:47 kernel: igc 0000:01:00.0 green0: NETDEV WATCHDOG: CPU: 1: transmit queue 2 timed out 5498 ms 19:36:47 kernel: igc 0000:01:00.0 green0: Register Dump 19:36:47 kernel: igc 0000:01:00.0 green0: Register Name Value 19:36:47 kernel: igc 0000:01:00.0 green0: CTRL 181c0641 19:36:47 kernel: igc 0000:01:00.0 green0: STATUS 40680683 19:36:47 kernel: igc 0000:01:00.0 green0: CTRL_EXT 100000c0 19:36:47 kernel: igc 0000:01:00.0 green0: MDIC 1805dde1 19:36:47 kernel: igc 0000:01:00.0 green0: ICR 00000081 19:36:47 kernel: igc 0000:01:00.0 green0: RCTL 04408022 19:36:47 kernel: igc 0000:01:00.0 green0: RDLEN[0-3] 00001000 00001000 00001000 00001000 19:36:47 kernel: igc 0000:01:00.0 green0: RDH[0-3] 0000002c 00000024 000000fe 0000008b 19:36:47 kernel: igc 0000:01:00.0 green0: RDT[0-3] 0000002b 00000023 000000fd 0000008a 19:36:47 kernel: igc 0000:01:00.0 green0: RXDCTL[0-3] 02040808 02040808 02040808 02040808 19:36:47 kernel: igc 0000:01:00.0 green0: RDBAL[0-3] ffffb000 ffffa000 ffff9000 ffff8000 19:36:47 kernel: igc 0000:01:00.0 green0: RDBAH[0-3] 00000000 00000000 00000000 00000000 19:36:47 kernel: igc 0000:01:00.0 green0: TCTL a503f0fa 19:36:47 kernel: igc 0000:01:00.0 green0: TDBAL[0-3] fffff000 ffffe000 ffffd000 ffffc000 19:36:47 kernel: igc 0000:01:00.0 green0: TDBAH[0-3] 00000000 00000000 00000000 00000000 19:36:47 kernel: igc 0000:01:00.0 green0: TDLEN[0-3] 00001000 00001000 00001000 00001000 19:36:47 kernel: igc 0000:01:00.0 green0: TDH[0-3] 00000097 0000007f 000000db 00000058 19:36:47 kernel: igc 0000:01:00.0 green0: TDT[0-3] 00000097 0000007f 000000db 00000058 19:36:47 kernel: igc 0000:01:00.0 green0: TXDCTL[0-3] 02100108 02100108 02100108 02100108 19:36:47 kernel: igc 0000:01:00.0 green0: Reset adapter 19:36:47 kernel: igc 0000:01:00.0 green0: NIC Link is Up 2500 Mbps Full Duplex, Flow Control: RX/TX 19:36:47 kernel: igc 0000:01:00.0 green0: NIC Link is Down 19:36:48 kernel: igc 0000:01:00.0 green0: Register Dump 19:36:48 kernel: igc 0000:01:00.0 green0: Register Name Value 19:36:48 kernel: igc 0000:01:00.0 green0: CTRL 081c0641 19:36:48 kernel: igc 0000:01:00.0 green0: STATUS 40680681 19:36:48 kernel: igc 0000:01:00.0 green0: CTRL_EXT 100000c0 19:36:48 kernel: igc 0000:01:00.0 green0: MDIC 18017949 19:36:48 kernel: igc 0000:01:00.0 green0: ICR 00000001 19:36:48 kernel: igc 0000:01:00.0 green0: RCTL 04408022 19:36:48 kernel: igc 0000:01:00.0 green0: RDLEN[0-3] 00001000 00001000 00001000 00001000 19:36:48 kernel: igc 0000:01:00.0 green0: RDH[0-3] 00000000 00000000 00000000 00000000 19:36:48 kernel: igc 0000:01:00.0 green0: RDT[0-3] 000000ff 000000ff 000000ff 000000ff 19:36:48 kernel: igc 0000:01:00.0 green0: RXDCTL[0-3] 02040808 02040808 02040808 02040808 19:36:48 kernel: igc 0000:01:00.0 green0: RDBAL[0-3] ffffb000 ffffa000 ffff9000 ffff8000 19:36:48 kernel: igc 0000:01:00.0 green0: RDBAH[0-3] 00000000 00000000 00000000 00000000 19:36:48 kernel: igc 0000:01:00.0 green0: TCTL a50400fa 19:36:48 kernel: igc 0000:01:00.0 green0: TDBAL[0-3] fffff000 ffffe000 ffffd000 ffffc000 19:36:48 kernel: igc 0000:01:00.0 green0: TDBAH[0-3] 00000000 00000000 00000000 00000000 19:36:48 kernel: igc 0000:01:00.0 green0: TDLEN[0-3] 00001000 00001000 00001000 00001000 19:36:48 kernel: igc 0000:01:00.0 green0: TDH[0-3] 00000000 00000000 00000009 00000000 19:36:48 kernel: igc 0000:01:00.0 green0: TDT[0-3] 0000000d 00000000 00000096 00000004 19:36:48 kernel: igc 0000:01:00.0 green0: TXDCTL[0-3] 02100108 02100108 02100108 02100108 19:36:48 kernel: igc 0000:01:00.0 green0: Reset adapter 19:36:50 kernel: igc 0000:01:00.0 green0: Register Dump 19:36:50 kernel: igc 0000:01:00.0 green0: Register Name Value 19:36:50 kernel: igc 0000:01:00.0 green0: CTRL 081c0641 19:36:50 kernel: igc 0000:01:00.0 green0: STATUS 40680681 19:36:50 kernel: igc 0000:01:00.0 green0: CTRL_EXT 100000c0 19:36:50 kernel: igc 0000:01:00.0 green0: MDIC 18017949 19:36:50 kernel: igc 0000:01:00.0 green0: ICR 00000001 19:36:50 kernel: igc 0000:01:00.0 green0: RCTL 04408022 19:36:50 kernel: igc 0000:01:00.0 green0: RDLEN[0-3] 00001000 00001000 00001000 00001000 19:36:50 kernel: igc 0000:01:00.0 green0: RDH[0-3] 00000000 00000000 00000000 00000000 19:36:50 kernel: igc 0000:01:00.0 green0: RDT[0-3] 000000ff 000000ff 000000ff 000000ff 19:36:50 kernel: igc 0000:01:00.0 green0: RXDCTL[0-3] 02040808 02040808 02040808 02040808 19:36:50 kernel: igc 0000:01:00.0 green0: RDBAL[0-3] ffffb000 ffffa000 ffff9000 ffff8000 19:36:50 kernel: igc 0000:01:00.0 green0: RDBAH[0-3] 00000000 00000000 00000000 00000000 19:36:50 kernel: igc 0000:01:00.0 green0: TCTL a50400fa 19:36:50 kernel: igc 0000:01:00.0 green0: TDBAL[0-3] fffff000 ffffe000 ffffd000 ffffc000 19:36:50 kernel: igc 0000:01:00.0 green0: TDBAH[0-3] 00000000 00000000 00000000 00000000 19:36:50 kernel: igc 0000:01:00.0 green0: TDLEN[0-3] 00001000 00001000 00001000 00001000 19:36:50 kernel: igc 0000:01:00.0 green0: TDH[0-3] 0000000f 00000006 00000018 0000001e 19:36:50 kernel: igc 0000:01:00.0 green0: TDT[0-3] 0000001a 00000006 00000018 0000003f 19:36:50 kernel: igc 0000:01:00.0 green0: TXDCTL[0-3] 02100108 02100108 02100108 02100108 19:36:50 kernel: igc 0000:01:00.0 green0: Reset adapter 19:36:53 kernel: igc 0000:01:00.0 green0: NIC Link is Up 2500 Mbps Full Duplex, Flow Control: RX/TX 19:37:13 kernel: igc 0000:01:00.0 green0: NETDEV WATCHDOG: CPU: 1: transmit queue 2 timed out 5493 ms 19:37:13 kernel: igc 0000:01:00.0 green0: Register Dump 19:37:13 kernel: igc 0000:01:00.0 green0: Register Name Value 19:37:13 kernel: igc 0000:01:00.0 green0: CTRL 181c0641 19:37:13 kernel: igc 0000:01:00.0 green0: STATUS 40680683 19:37:13 kernel: igc 0000:01:00.0 green0: CTRL_EXT 100000c0 19:37:13 kernel: igc 0000:01:00.0 green0: MDIC 1805dde1 19:37:13 kernel: igc 0000:01:00.0 green0: ICR 00000081 19:37:13 kernel: igc 0000:01:00.0 green0: RCTL 04408022 19:37:13 kernel: igc 0000:01:00.0 green0: RDLEN[0-3] 00001000 00001000 00001000 00001000 19:37:13 kernel: igc 0000:01:00.0 green0: RDH[0-3] 00000052 00000075 0000009e 00000078 19:37:13 kernel: igc 0000:01:00.0 green0: RDT[0-3] 00000051 00000074 0000009d 00000077 19:37:13 kernel: igc 0000:01:00.0 green0: RXDCTL[0-3] 02040808 02040808 02040808 02040808 19:37:13 kernel: igc 0000:01:00.0 green0: RDBAL[0-3] ffffb000 ffffa000 ffff9000 ffff8000 19:37:13 kernel: igc 0000:01:00.0 green0: RDBAH[0-3] 00000000 00000000 00000000 00000000 19:37:13 kernel: igc 0000:01:00.0 green0: TCTL a503f0fa 19:37:13 kernel: igc 0000:01:00.0 green0: TDBAL[0-3] fffff000 ffffe000 ffffd000 ffffc000 19:37:13 kernel: igc 0000:01:00.0 green0: TDBAH[0-3] 00000000 00000000 00000000 00000000 19:37:13 kernel: igc 0000:01:00.0 green0: TDLEN[0-3] 00001000 00001000 00001000 00001000 19:37:13 kernel: igc 0000:01:00.0 green0: TDH[0-3] 000000e1 000000a9 00000021 00000003 19:37:13 kernel: igc 0000:01:00.0 green0: TDT[0-3] 000000e1 000000a9 00000021 00000003 19:37:13 kernel: igc 0000:01:00.0 green0: TXDCTL[0-3] 02100108 02100108 02100108 02100108 19:37:13 kernel: igc 0000:01:00.0 green0: Reset adapter 19:37:17 kernel: igc 0000:01:00.0 green0: NIC Link is Up 2500 Mbps Full Duplex, Flow Control: RX/TX ``` From what I could find online and on this board, the I225-V NIC is known to have stability issues. However, a lot of the information out there is either out of date or incomplete. Here is the most recent post that I could find: [NETDEV WATCHDOG: CPU: 0: transmit queue 0 timed out 5600 ms](https://community.ipfire.org/t/netdev-watchdog-cpu-0-transmit-queue-0-timed-out-5600-ms/14474) I appreciate hearing all suggestions and other peoples experience with the I225-V. Thanks! ---
**Author:** ![pike\_it](https://community.ipfire.org/user_avatar/community.ipfire.org/pike_it/32/16425_2.png) [@pike\_it](https://community.ipfire.org/u/pike_it)\ **Post date:** [25 October 2025 08:13 UTC](https://community.ipfire.org/t/instability-on-i225-v/15189/2 "2025-10-25T08:13:54Z")
This NIC is embedded on board or is a replaceable PCIe card? Which version of IPfire you’re running? ---
**Author:** ![melon](https://community.ipfire.org/user_avatar/community.ipfire.org/melon/32/12858_2.png) [@melon](https://community.ipfire.org/u/melon)\ **Post date:** [25 October 2025 13:40 UTC](https://community.ipfire.org/t/instability-on-i225-v/15189/3 "2025-10-25T13:40:13Z")
It’s an embedded chip, and I’m running IPFire 2.29 (x86\_64) - core197. ---
**Author:** ![ms](https://community.ipfire.org/user_avatar/community.ipfire.org/ms/32/16615_2.png) [@ms](https://community.ipfire.org/u/ms)\ **Post date:** [25 October 2025 13:42 UTC](https://community.ipfire.org/t/instability-on-i225-v/15189/4 "2025-10-25T13:42:31Z")
This sounds like the firmware is stalling. It could be a firmware bug, or something like not enough power for the chip to draw. Does it go away if you manually set it to only do 1 Gbps? ---
**Author:** ![melon](https://community.ipfire.org/user_avatar/community.ipfire.org/melon/32/12858_2.png) [@melon](https://community.ipfire.org/u/melon)\ **Post date:** [25 October 2025 14:02 UTC](https://community.ipfire.org/t/instability-on-i225-v/15189/5 "2025-10-25T14:02:46Z")
I’ll try dropping it to 1Gb/s to see if that helps, thanks. Do you have any suggestions on ways that I could try to reliably replicate the issue? That’s been a large part of my difficulty in troubleshooting this. ---
**Author:** ![xperimental](https://community.ipfire.org/user_avatar/community.ipfire.org/xperimental/32/16702_2.png) [@xperimental](https://community.ipfire.org/u/xperimental)\ **Post date:** [26 October 2025 03:21 UTC](https://community.ipfire.org/t/instability-on-i225-v/15189/6 "2025-10-26T03:21:44Z")
Since it’s embedded, there sould be power saving options in BIOS/UEFI settings. Check and disable them. ---
**Author:** ![melon](https://community.ipfire.org/user_avatar/community.ipfire.org/melon/32/12858_2.png) [@melon](https://community.ipfire.org/u/melon)\ **Post date:** [26 October 2025 16:00 UTC](https://community.ipfire.org/t/instability-on-i225-v/15189/7 "2025-10-26T16:00:41Z")
Thanks for the suggestion. I’ve now disabled all powersaver options. I’ve also played around with my QoS settings and so far it’s been about a day since the last occurrence. Since I can’t replicate this on demand I’ll wait another full day before marking this as solved. ---
**Author:** ![xperimental](https://community.ipfire.org/user_avatar/community.ipfire.org/xperimental/32/16702_2.png) [@xperimental](https://community.ipfire.org/u/xperimental)\ **Post date:** [26 October 2025 16:13 UTC](https://community.ipfire.org/t/instability-on-i225-v/15189/8 "2025-10-26T16:13:41Z")
Only for the NICs, not the CPU etc.