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AOpen DE965-HE Realtek Lan Driver 5.736_0820: gigabit port suddenly negotiating 100 Mbps

Solvedethernetlanlink-speedrealtek13 replies · 140 views · started
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Accepted solution by Freya J. — check for a hidden power issue: under Power Management tab, untick Allow the computer to turn off this device and see if negotiation…
  1. Ines Rahman
    @ines_early

    guys pls help i pay for a local NAS and my home server is wired, but speed tests top out at roughly 95 Mbps. windows says the link speed is 100/100 Mbps. thats suspicious, because before the Realtek AOpen DE965-HE Realtek Lan Driver 5.736_0820 update it showed 1000 and i was getting full speed. heres what the adapter status looks like:

    USB Audio Device Properties

    USB Audio Device Properties
Device status:
This device cannot start. (Code 10)

{Operation Failed}
The requested operation was unsuccessful.

    i havent touched the cable or the router. can a driver update really change the negotiated speed, or is it a coincidence and smth physical is going on? any ideas??

    2
  2. Liv Larsen
    @silicon_ranger

    Check the adapter settings: Device Manager > Network adapters > Ethernet > Properties > Advanced. Find Speed & Duplex and make sure its Auto Negotiation. Updates sometimes reset or change this 🤷 Dont force 1000 full unless auto fails.

    0 2 helpful
  3. Sara T.
    @stacksmith-2pv

    yeahhh check the status in a terminal: Get-NetAdapter | Select Name, LinkSpeed in PowerShell shows the negotiated speed quickly as you test different cables and ports.

    lol

    1 0 helpful
  4. Mateo C.
    @mcosta

    oof if the lapotp gets gigabit on the same cable and port, roll back the LAN driver in Device Manager > Properties > Driver > Roll Back Driver, or install the mothebroard makers version from their support page.

    1 0 helpful
  5. Yusuf Weber
    @quartzlab-11e

    been there man following, having the same problem 🤷 have u checked your driver settings? mine were reset after an update

    4 5 helpful
  6. Mateo C.
    @mcosta

    A ~95 Mbps cap almost always means teh link negotiated 100 Mbps. Gigabit needs all four wire pairs, 100 Mbps only uses two. A damaged cable, a bent pin or a cheap coupler can drop it to 100 :D Swap the cable first since it's teh cheapest test.

    0 4 helpful
  7. Nadia Iqbal
    @nadia_quartz

    @silicon_ranger nah thats not it, ethernet has nothnig to do with it. told my boss it would take 10 minutes. its been two days

    6 0 helpful
  8. Freya J.
    @freya.jansen44
    in reply to @nadia_quartz Accepted solution

    check for a hidden power issue: under Power Management tab, untick Allow the computer to turn off this device and see if negotiation behaves after reboot. worked for me anyway 🤷

    6 4 helpful
  9. Freya J.
    @freya.jansen44
    in reply to @freya.jansen44

    honestly just reset the cache and save yourself the pain, is realtek even worth bothering with or should i just leave it lmk how it goes

    1 4 helpful
  12. Yusuf Weber
    @quartzlab-11e

    yeahhh bump 😅 still happening with de965-he for me lmk how it goes

    6 0 helpful
  13. Theo U.
    @copperranger

    Forcing 1000 Mbps full duplex can make things worse with some switches. Stick with auto negotiation and fix teh root cause. but hey ymmv

    40 3 helpful

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