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[讨论] ThinkPad Neo 14 AMD版Linux下键盘和Unified Memory Controller报错的问题

发表于 2022-7-10 11:27   |   来自火狐浏览器 [复制链接] 楼  
6505 4  

等了半个月联想终于给我发了替换主板，维修中心收到之后就立即帮我换好了。拿到了机器于是我继续折腾Linux。

现在遇到且无法解决的问题有两个：
1. Linux下笔记本内置的键盘无法工作，按键无反映（包括CapsLock的灯）。有意思的是按Fn+Space（键盘灯开关）、Fn+F5或Fn+F6（屏幕亮度）时，操作系统能正常响应，也能显示对因信息，键盘在grub下也能工作正常，但系统载入驱动之后即无法工作。
2. 系统频繁报[Hardware Error]: Unified Memory Controller Ext. Error Code: 12错误，dmesg里已经满屏这类错误信息。

我搜了一下，发现上述两个问题并不稀有。在联想英文官网上有一位ThinkPad Z16（也是新的AMD机型）的用户也遇到了Unified Memory Controller硬件错误，此外在Archlinux官网另一位Thinkbook 14+ ARA (Ryzen 6800H)用户在抱怨与我同样（UMC报硬件错误+键盘无法使用）的问题。

根据Archlinux官网上用户的猜测，认为这个问题是联想（或其供应商）固件中的Bug导致的，需要等联想修复。希望这确实只是固件Bug，而不是真的硬件错误。

最后：我看隔壁ThinkPad Neo 14 Intel版本的用户似乎都很开心的没有遇到这样的问题。所以如果你想安装Linux，还是去买Intel版本的好了。

Unified Memory Controller报错的详细信息：
  1. <div>$ dmesg | grep "Hardware Error"
  2. [  332.696447] mce: [Hardware Error]: Machine check events logged
  3. [  332.696457] [Hardware Error]: Corrected error, no action required.
  4. [  332.696466] [Hardware Error]: CPU:0 (19:44:1) MC15_STATUS[Over|CE|MiscV|AddrV|-|-|SyndV|CECC|-|-|-]: 0xdc204000000c011b
  5. [  332.696484] [Hardware Error]: Error Addr: 0x00000000efce8bc0
  6. [  332.696488] [Hardware Error]: IPID: 0x0000009600050f00, Syndrome: 0x000001ff0a240700
  7. [  332.696493] [Hardware Error]: Unified Memory Controller Ext. Error Code: 12
  8. [  332.696496] [Hardware Error]: cache level: L3/GEN, tx: GEN, mem-tx: RD
  9. [  332.696508] mce: [Hardware Error]: Machine check events logged
  10. [  332.696510] [Hardware Error]: Corrected error, no action required.
  11. [  332.696512] [Hardware Error]: CPU:0 (19:44:1) MC16_STATUS[Over|CE|MiscV|AddrV|-|-|SyndV|CECC|-|-|-]: 0xdc204000000c011b
  12. [  332.696524] [Hardware Error]: Error Addr: 0x00000000efce8b00
  13. [  332.696526] [Hardware Error]: IPID: 0x0000009600150f00, Syndrome: 0x000001ff0a240700
  14. [  332.696530] [Hardware Error]: Unified Memory Controller Ext. Error Code: 12
  15. [  332.696531] [Hardware Error]: cache level: L3/GEN, tx: GEN, mem-tx: RD
  16. [  332.696537] [Hardware Error]: Corrected error, no action required.
  17. [  332.696538] [Hardware Error]: CPU:0 (19:44:1) MC17_STATUS[Over|CE|MiscV|AddrV|-|-|SyndV|CECC|-|-|-]: 0xdc204000000c011b
  18. [  332.696548] [Hardware Error]: Error Addr: 0x00000000efce8b00</div><div>...</div><div>[11473.718845] [Hardware Error]: CPU:0 (19:44:1) MC17_STATUS[Over|CE|MiscV|AddrV|-|-|SyndV|CECC|-|-|-]: 0xdc204000000c011b
  19. [11473.718854] [Hardware Error]: Error Addr: 0x00000000efcf0b00
  20. [11473.718856] [Hardware Error]: IPID: 0x0000009600250f00, Syndrome: 0x000001ff0a240701
  21. [11473.718860] [Hardware Error]: Unified Memory Controller Ext. Error Code: 12
  22. [11473.718861] [Hardware Error]: cache level: L3/GEN, tx: GEN, mem-tx: RD
  23. [11473.718866] [Hardware Error]: Corrected error, no action required.
  24. [11473.718867] [Hardware Error]: CPU:0 (19:44:1) MC18_STATUS[Over|CE|MiscV|AddrV|-|-|SyndV|CECC|-|-|-]: 0xdc204000000c011b
  25. [11473.718876] [Hardware Error]: Error Addr: 0x00000000efcf0b00
  26. [11473.718878] [Hardware Error]: IPID: 0x0000009600350f00, Syndrome: 0x000001ff0a240701
  27. [11473.718881] [Hardware Error]: Unified Memory Controller Ext. Error Code: 12
  28. [11473.718882] [Hardware Error]: cache level: L3/GEN, tx: GEN, mem-tx: RD</div>
复制代码

内存的信息：
  1. # dmidecode 3.3
  2. Getting SMBIOS data from sysfs.
  3. SMBIOS 3.3.0 present.

  5. Handle 0x0005, DMI type 16, 23 bytes
  6. Physical Memory Array
  7.     Location: System Board Or Motherboard
  8.     Use: System Memory
  9.     Error Correction Type: None
  10.     Maximum Capacity: 64 GB
  11.     Error Information Handle: 0x0004
  12.     Number Of Devices: 4

  14. Handle 0x0008, DMI type 17, 92 bytes
  15. Memory Device
  16.     Array Handle: 0x0005
  17.     Error Information Handle: 0x0007
  18.     Total Width: 32 bits
  19.     Data Width: 32 bits
  20.     Size: 4 GB
  21.     Form Factor: Other
  22.     Set: None
  23.     Locator: DIMM 0
  24.     Bank Locator: P0 CHANNEL A
  25.     Type: <OUT OF SPEC>
  26.     Type Detail: Synchronous Unbuffered (Unregistered)
  27.     Speed: 6400 MT/s
  28.     Manufacturer: Micron Technology
  29.     Serial Number: 00000000
  30.     Asset Tag: Not Specified
  31.     Part Number: MT62F1G32D4DR-031 WT
  32.     Rank: 2
  33.     Configured Memory Speed: 6400 MT/s
  34.     Minimum Voltage: 0.5 V
  35.     Maximum Voltage: 0.5 V
  36.     Configured Voltage: 0.5 V
  37.     Memory Technology: DRAM
  38.     Memory Operating Mode Capability: Volatile memory
  39.     Firmware Version: Unknown
  40.     Module Manufacturer ID: Bank 1, Hex 0x2C
  41.     Module Product ID: Unknown
  42.     Memory Subsystem Controller Manufacturer ID: Unknown
  43.     Memory Subsystem Controller Product ID: Unknown
  44.     Non-Volatile Size: None
  45.     Volatile Size: 4 GB
  46.     Cache Size: None
  47.     Logical Size: None

  49. Handle 0x000B, DMI type 17, 92 bytes
  50. Memory Device
  51.     Array Handle: 0x0005
  52.     Error Information Handle: 0x000A
  53.     Total Width: 32 bits
  54.     Data Width: 32 bits
  55.     Size: 4 GB
  56.     Form Factor: Other
  57.     Set: None
  58.     Locator: DIMM 0
  59.     Bank Locator: P0 CHANNEL B
  60.     Type: <OUT OF SPEC>
  61.     Type Detail: Synchronous Unbuffered (Unregistered)
  62.     Speed: 6400 MT/s
  63.     Manufacturer: Micron Technology
  64.     Serial Number: 00000000
  65.     Asset Tag: Not Specified
  66.     Part Number: MT62F1G32D4DR-031 WT
  67.     Rank: 2
  68.     Configured Memory Speed: 6400 MT/s
  69.     Minimum Voltage: 0.5 V
  70.     Maximum Voltage: 0.5 V
  71.     Configured Voltage: 0.5 V
  72.     Memory Technology: DRAM
  73.     Memory Operating Mode Capability: Volatile memory
  74.     Firmware Version: Unknown
  75.     Module Manufacturer ID: Bank 1, Hex 0x2C
  76.     Module Product ID: Unknown
  77.     Memory Subsystem Controller Manufacturer ID: Unknown
  78.     Memory Subsystem Controller Product ID: Unknown
  79.     Non-Volatile Size: None
  80.     Volatile Size: 4 GB
  81.     Cache Size: None
  82.     Logical Size: None

  84. Handle 0x000E, DMI type 17, 92 bytes
  85. Memory Device
  86.     Array Handle: 0x0005
  87.     Error Information Handle: 0x000D
  88.     Total Width: 32 bits
  89.     Data Width: 32 bits
  90.     Size: 4 GB
  91.     Form Factor: Other
  92.     Set: None
  93.     Locator: DIMM 0
  94.     Bank Locator: P0 CHANNEL C
  95.     Type: <OUT OF SPEC>
  96.     Type Detail: Synchronous Unbuffered (Unregistered)
  97.     Speed: 6400 MT/s
  98.     Manufacturer: Micron Technology
  99.     Serial Number: 00000000
  100.     Asset Tag: Not Specified
  101.     Part Number: MT62F1G32D4DR-031 WT
  102.     Rank: 2
  103.     Configured Memory Speed: 6400 MT/s
  104.     Minimum Voltage: 0.5 V
  105.     Maximum Voltage: 0.5 V
  106.     Configured Voltage: 0.5 V
  107.     Memory Technology: DRAM
  108.     Memory Operating Mode Capability: Volatile memory
  109.     Firmware Version: Unknown
  110.     Module Manufacturer ID: Bank 1, Hex 0x2C
  111.     Module Product ID: Unknown
  112.     Memory Subsystem Controller Manufacturer ID: Unknown
  113.     Memory Subsystem Controller Product ID: Unknown
  114.     Non-Volatile Size: None
  115.     Volatile Size: 4 GB
  116.     Cache Size: None
  117.     Logical Size: None

  119. Handle 0x0011, DMI type 17, 92 bytes
  120. Memory Device
  121.     Array Handle: 0x0005
  122.     Error Information Handle: 0x0010
  123.     Total Width: 32 bits
  124.     Data Width: 32 bits
  125.     Size: 4 GB
  126.     Form Factor: Other
  127.     Set: None
  128.     Locator: DIMM 0
  129.     Bank Locator: P0 CHANNEL D
  130.     Type: <OUT OF SPEC>
  131.     Type Detail: Synchronous Unbuffered (Unregistered)
  132.     Speed: 6400 MT/s
  133.     Manufacturer: Micron Technology
  134.     Serial Number: 00000000
  135.     Asset Tag: Not Specified
  136.     Part Number: MT62F1G32D4DR-031 WT
  137.     Rank: 2
  138.     Configured Memory Speed: 6400 MT/s
  139.     Minimum Voltage: 0.5 V
  140.     Maximum Voltage: 0.5 V
  141.     Configured Voltage: 0.5 V
  142.     Memory Technology: DRAM
  143.     Memory Operating Mode Capability: Volatile memory
  144.     Firmware Version: Unknown
  145.     Module Manufacturer ID: Bank 1, Hex 0x2C
  146.     Module Product ID: Unknown
  147.     Memory Subsystem Controller Manufacturer ID: Unknown
  148.     Memory Subsystem Controller Product ID: Unknown
  149.     Non-Volatile Size: None
  150.     Volatile Size: 4 GB
  151.     Cache Size: None
  152.     Logical Size: None
复制代码

发上来希望这个帖子未来会被有能力解决这些问题的人看到，联想大概是不会为Linux用户提供支持的。
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ServiceUser
来自火狐浏览器  楼主| 发表于 2022-7-13 09:05:28
好了，这个问题解决了。

解决方案和Archlinux官网帖子里的一样，就是自己修改Linux Kernel的代码，把键盘和Trackpoint的IRQ加进ACPI skip_override_table。

修改好之后不但键盘和Trackpoint都能用了，连Unified Memory Controller报错也消失了。
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176****5580_20
来自IOS版联想 发表于 2022-7-22 02:26:49
感谢大佬！
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176****5580_20
来自IOS版联想 发表于 2022-7-22 02:35:53
大佬原帖子有没有链接？
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lenovo81151352
来自火狐浏览器 发表于 2023-12-26 16:38:19
来晚了。上面所提到的问题已经全部修好了。Unified Memory Controller大概根BIOS有关，更新固件大概能改善。键盘/Trackpoint在内核Kernel 6.5.0及以上版本已经能正常工作了。
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