igc I255-V dmesg, ethtool

Crash log, journalctl

Nov 08 20:23:08 darkforest kernel: igc 0000:0a:00.0 eno1: PCIe link lost, device now detached
Nov 08 20:23:08 darkforest kernel: ------------[ cut here ]------------
Nov 08 20:23:08 darkforest kernel: igc: Failed to read reg 0xc030!
Nov 08 20:23:08 darkforest kernel: WARNING: CPU: 5 PID: 121815 at drivers/net/ethernet/intel/igc/igc_main.c:6197 igc_rd32+0x95/0xa0 [igc]
Nov 08 20:23:08 darkforest kernel: Modules linked in: veth tls udp_diag tcp_diag inet_diag xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xt_addrtype iptable_filter iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 br_netfilter bridge stp llc snd_seq_dummy snd_hrtimer snd_seq rfcomm snd_usb_a>
Nov 08 20:23:08 darkforest kernel:  aesni_intel snd_hda_codec crypto_simd cryptd ttm snd_hda_core rapl pcspkr sp5100_tco drm_display_helper snd_hwdep cfg80211 snd_pcm ccp cec i2c_piix4 k10temp snd_timer igc rfkill snd tpm_crb soundcore tpm_tis wmi tpm_tis_core video gpio_amdpt mac_hid tpm acpi_cpufreq gpio_generic >
Nov 08 20:23:08 darkforest kernel: CPU: 5 PID: 121815 Comm: kworker/5:0 Tainted: P           OE      6.0.7-arch1-1 #1 54734d35253fb4c526adcfdfa2e7225be9ec4a9a
Nov 08 20:23:08 darkforest kernel: Hardware name: ASUS System Product Name/ROG STRIX X670E-E GAMING WIFI, BIOS 0705 10/05/2022
Nov 08 20:23:08 darkforest kernel: Workqueue: events igc_watchdog_task [igc]
Nov 08 20:23:08 darkforest kernel: RIP: 0010:igc_rd32+0x95/0xa0 [igc]
Nov 08 20:23:08 darkforest kernel: Code: 48 c7 c6 b8 e6 9b c0 e8 94 71 23 f6 48 8b bd 28 ff ff ff e8 cd 8a c7 f5 84 c0 74 b4 89 de 48 c7 c7 e0 e6 9b c0 e8 ab 73 1e f6 <0f> 0b eb a2 0f 1f 80 00 00 00 00 66 0f 1f 00 0f 1f 44 00 00 41 56
Nov 08 20:23:08 darkforest kernel: RSP: 0018:ffffb5bd5770fdf0 EFLAGS: 00010282
Nov 08 20:23:08 darkforest kernel: RAX: 0000000000000000 RBX: 000000000000c030 RCX: 0000000000000027
Nov 08 20:23:08 darkforest kernel: RDX: ffff959498361668 RSI: 0000000000000001 RDI: ffff959498361660
Nov 08 20:23:08 darkforest kernel: RBP: ffff9585d57d4c58 R08: 0000000000000000 R09: ffffb5bd5770fc78
Nov 08 20:23:08 darkforest kernel: R10: 0000000000000003 R11: ffff9594d7fa4fe8 R12: ffff9585d57d4000
Nov 08 20:23:08 darkforest kernel: R13: 0000000000000000 R14: ffff9585c15a8d80 R15: 000000000000c030
Nov 08 20:23:08 darkforest kernel: FS:  0000000000000000(0000) GS:ffff959498340000(0000) knlGS:0000000000000000
Nov 08 20:23:08 darkforest kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Nov 08 20:23:08 darkforest kernel: CR2: 0000557493460160 CR3: 00000009bd610000 CR4: 0000000000750ee0
Nov 08 20:23:08 darkforest kernel: PKRU: 55555554
Nov 08 20:23:08 darkforest kernel: Call Trace:
Nov 08 20:23:08 darkforest kernel:  <TASK>
Nov 08 20:23:08 darkforest kernel:  igc_update_stats+0x8a/0x6c0 [igc dbd7ab4a69bc1f61b193f26242c532d95a5b95ae]
Nov 08 20:23:08 darkforest kernel:  igc_watchdog_task+0xa7/0x2c0 [igc dbd7ab4a69bc1f61b193f26242c532d95a5b95ae]
Nov 08 20:23:08 darkforest kernel:  process_one_work+0x1c7/0x380
Nov 08 20:23:08 darkforest kernel:  worker_thread+0x51/0x390
Nov 08 20:23:08 darkforest kernel:  ? rescuer_thread+0x3b0/0x3b0
Nov 08 20:23:08 darkforest kernel:  kthread+0xde/0x110
Nov 08 20:23:08 darkforest kernel:  ? kthread_complete_and_exit+0x20/0x20
Nov 08 20:23:08 darkforest kernel:  ret_from_fork+0x22/0x30
Nov 08 20:23:08 darkforest kernel:  </TASK>
Nov 08 20:23:08 darkforest kernel: ---[ end trace 0000000000000000 ]---

dmesg grep

[Tue Nov  8 20:36:51 2022] igc 0000:0a:00.0: PCIe PTM not supported by PCIe bus/controller
[Tue Nov  8 20:36:51 2022] igc 0000:0a:00.0 (unnamed net_device) (uninitialized): PHC added
[Tue Nov  8 20:36:51 2022] igc 0000:0a:00.0: 4.000 Gb/s available PCIe bandwidth (5.0 GT/s PCIe x1 link)
[Tue Nov  8 20:36:51 2022] igc 0000:0a:00.0 eth0: MAC: a0:36:bc:ac:c3:be
[Tue Nov  8 20:36:51 2022] igc 0000:0a:00.0 eno1: renamed from eth0
[Tue Nov  8 20:36:55 2022] igc 0000:0a:00.0 eno1: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX

ethtool -i eno1

driver: igc
version: 6.0.7-arch1-1
firmware-version: 1082:8770
expansion-rom-version: 
bus-info: 0000:0a:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes

Did you happen to find a way to resolve this issue? I'm experiencing the same thing. (Same motherboard too)

Edit: For any other poor soul that stumbles across this, read https://www.reddit.com/r/buildapc/comments/xypn1m/network_card_intel_ethernet_controller_i225v_igc/

Sorry to hear you suffer from this too.
I had no luck at resolving the issue, was forced to switch to ethernet connection via USB-adapter, had no issues since then