# Bug: When select Speed other than default to 2.5Gbps

**URL:** <https://forum.alta.inc/t/bug-when-select-speed-other-than-default-to-2-5gbps/4197>\
**Category:** Routers\
**Created:** [January 7, 2025, 12:54pm UTC](https://forum.alta.inc/t/bug-when-select-speed-other-than-default-to-2-5gbps/4197 "2025-01-07T12:54:17Z")\
**Posts on this page:** 5\
**Page:** 2

<div class="post-metadata">

**Author:** ![Hefty](https://forum.alta.inc/letter_avatar_proxy/v4/letter/h/ed655f/32.png) [@Hefty](https://forum.alta.inc/u/Hefty)\
**Post date:** [January 17, 2025, 1:14pm UTC](https://forum.alta.inc/t/bug-when-select-speed-other-than-default-to-2-5gbps/4197/21 "2025-01-17T13:14:20Z")

</div>

```auto
Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller 
Kernel driver in use: r8169

```

ethtool on device

```auto
Settings for enp3s0:
        Supported ports: [TP MII]
        Supported link modes: 10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
                                2500baseT/Full
        Supported pause frame use: Symmetric Receive-only
        Supports auto-negotiation: Yes
        Supported FEC modes: Not reported
        Advertised link modes: 10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
                                2500baseT/Full
        Advertised pause frame use: Symmetric Receive-only
        Advertised auto-negotiation: Yes
        Advertised FEC modes: Not reported
        Link partner advertised link modes: 10baseT/Full
                                             100baseT/Full
                                             1000baseT/Full
                                             2500baseT/Full
        Link partner advertised pause frame use: Symmetric Receive-only
        Link partner advertised auto-negotiation: Yes
        Link partner advertised FEC modes: Not reported
        Speed: 2500Mb/s
        Duplex: Full
        Auto-negotiation: on
        Port: Twisted Pair
        PHYAD: 0
        Transceiver: external
        MDI-X: Unknown
        Supports Wake-on: pumbg
        Wake-on: d
        Link detected: yes

```

Forgot to mention, this is a Proxmox VE 8.2.4 Host.

---

<div class="post-metadata">

**Author:** ![jaianna](https://forum.alta.inc/letter_avatar_proxy/v4/letter/j/dfb087/32.png) [@jaianna](https://forum.alta.inc/u/jaianna)\
**Post date:** [January 17, 2025, 1:20pm UTC](https://forum.alta.inc/t/bug-when-select-speed-other-than-default-to-2-5gbps/4197/22 "2025-01-17T13:20:03Z")

</div>

Omada EAP670 that uses Qualcomm gets knocked off as well.

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<div class="post-metadata">

**Author:** ![Alta-Jeff](https://forum.alta.inc/user_avatar/forum.alta.inc/alta-jeff/32/56_2.png) [@Alta-Jeff](https://forum.alta.inc/u/Alta-Jeff)\
**Post date:** [January 17, 2025, 5:38pm UTC](https://forum.alta.inc/t/bug-when-select-speed-other-than-default-to-2-5gbps/4197/23 "2025-01-17T17:38:30Z")

</div>

I’ve finally been able to reproduce the issue, and I have a firmware that resolves the issue. If anyone would like to test it, please message me.

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<div class="post-metadata">

**Author:** ![Hefty](https://forum.alta.inc/letter_avatar_proxy/v4/letter/h/ed655f/32.png) [@Hefty](https://forum.alta.inc/u/Hefty)\
**Post date:** [January 17, 2025, 6:08pm UTC](https://forum.alta.inc/t/bug-when-select-speed-other-than-default-to-2-5gbps/4197/24 "2025-01-17T18:08:38Z")

</div>

As I mentioned before, I don’t require this, but I’m happy to test if you require testers @Alta-Jeff

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<div class="post-metadata">

**Author:** ![system](https://forum.alta.inc/uploads/default/original/1X/087669c3d7c0a6495087b41d6f385a6771f2231c.png) [@system](https://forum.alta.inc/u/system)\
**Post date:** [January 12, 2026, 4:21pm UTC](https://forum.alta.inc/t/bug-when-select-speed-other-than-default-to-2-5gbps/4197/25 "2026-01-12T16:21:12Z")

</div>

Closed on January 12, 2026, 4:21pm UTC

This thread has been automatically closed due to inactivity. If you believe you have the same issue, please create a new post describing your issue. Feel free to link to this post for context if desired.

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