Revision 0x00000122 for 06-b7-01 (i9-14900HX) breaks initialisation of mei_me

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难度
4/5
预计耗时
3-5 天
新手友好度
30/100
Issue 类型
缺陷
描述清晰度
基本清楚
活跃度
停滞
技术栈
linux

调研方向

未指定仓库文件或测试。首先比较 06-b7-01/i9-14900HX 上 microcode 修订版 0x11f 和 0x122 的启动行为,包括 dis_ucode_ldr 情况,并调查 mei_me 初始化消息。完成标准是确定修订版 0x122 是否导致回归,并记录已确认的解决方案。

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描述

Dear all,

I'm seeing a difference before and after updating the microcode for 06-b7-01. I don't quite know what it means, but I do see a multi-second stall on boot when the MEI initialisation fails. This happens even on the same kernel with and without the dis_ucode_ldr kernel option.

Old behaviour:
[ 0.674435] microcode: Current revision: 0x0000011f
[ 4.934601] mei_me 0000:00:16.0: enabling device (0000 -> 0002)

New behaviour:
[ 0.712298] microcode: Current revision: 0x00000122
[ 0.712375] microcode: Updated early from: 0x0000011f
[ 0.915088] mei_me 0000:00:16.0: enabling device (0000 -> 0002)
[ 0.915704] mei_me 0000:00:14.0: H_RST is not set = 0x1A000840
[ 2.943674] mei_me 0000:00:14.0: wait hw ready failed
[ 2.943822] mei_me 0000:00:14.0: hw_start failed ret = -62 fw status = 803401FD 00000000 00006032 00000000 00000000 00000000
[ 2.944064] mei_me 0000:00:14.0: H_RST is not set = 0x1A000840
[ 4.959607] mei_me 0000:00:14.0: wait hw ready failed
[ 4.959746] mei_me 0000:00:14.0: hw_start failed ret = -62 fw status = 803401FD 00000000 00006032 00000000 00000000 00000000
[ 4.959988] mei_me 0000:00:14.0: H_RST is not set = 0x1A000840
[ 6.975616] mei_me 0000:00:14.0: wait hw ready failed
[ 6.975769] mei_me 0000:00:14.0: hw_start failed ret = -62 fw status = 803401FD 00000000 00006032 00000000 00000000 00000000
[ 6.981211] mei_me 0000:00:14.0: reset: reached maximal consecutive resets: disabling the device
[ 6.986604] mei_me 0000:00:14.0: reset failed ret = -19
[ 6.991920] mei_me 0000:00:14.0: link layer initialization failed.
[ 6.997228] mei_me 0000:00:14.0: init hw failure.
[ 7.002843] mei_me 0000:00:14.0: initialization failed.

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