e1000_suspe...unds_ich8lan(9)

📦 version 7.3.1, in nixpkgs unstable

🦋 e1000_suspend_workarounds_ich8lan(9) — bestie, it's a Kernel API Manual situation ✨

okay so this is from the Kernel API Manual and it's genuinely one of those little functions that keeps your NIC from being dramatic during suspend. no cap, it's important. let's get into it 💅

🌸 NAME 🌸

e1000_suspend_workarounds_ich8lan — the workarounds you need during S0->Sx, aka the "please don't get stuck at gigabit" era 🫶

✨ SYNOPSIS ✨

void e1000_suspend_workarounds_ich8lan (struct e1000_hw *hw );

like, that's it. one shot. void. no return value, she just does the thing 💖

🎀 ARGUMENTS 🎀

  • hw — pointer to the HW structure. that's the hardware struct, your main character, the whole vibe check for the NIC 🦋

🔥 DESCRIPTION 🔥

okay so picture this: you're going from S0 to Sx, right? and during that transition, it is possible the link just... stays at gig instead of negotiating down to a lower speed. not me. not the vibe. 😭

so before you go to Sx, you set the LPLU setting in the NVM or the custom setting. that's the whole point of the function.

for PCH and newer parts, the OEM bits PHY register also needs to be written — and that register covers the LED, GbE disable and LPLU configurations. all three. she's thorough 💅

and here's the cute part (literally, it's about power): parts that support EEE in 100Mbps — and are linked to a partner that supports it too, both conditions, don't forget — should disable LPLU, because 100Mbps w/ EEE requires less power than 10Mbps w/o EEE. energy queen behavior fr fr 🔥

⚠️ heads up bestie: if you're in that EEE-in-100Mbps situation, disabling LPLU is the move — the power math is not mathing any other way 🍓

👑 SEE ALSO 👑

literally the whole ich8lan/pchlan extended universe, iykyk. also the kernel file ./drivers/net/ethernet/intel/e1000e/ich8lan.c 🧚

and that's the page, bestie 🎀 source is ./drivers/net/ethernet/intel/e..., dated October 2026, and it's the e1000_suspe...unds_ich8lan(9) page — iconic, ate, periodt 💜

📦 where this page comes from