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* [Intel-wired-lan] Link does not come up after resuming from ACPI S3
@ 2022-09-30 15:56 Paul Menzel
  2022-10-02  6:57 ` Neftin, Sasha
  0 siblings, 1 reply; 4+ messages in thread
From: Paul Menzel @ 2022-09-30 15:56 UTC (permalink / raw)
  To: Jesse Brandeburg, Tony Nguyen; +Cc: intel-wired-lan

Dear Linux folks,


On a Dell Latitude E7250 with Debian sid/unstable, resuming Linux 5.19.6 
and connecting an Ethernet cable, the link did not come up.

     $ lspci -s 02:00.0 -nn
     02:00.0 Network controller [0280]: Intel Corporation Wireless 7265 
[8086:095a] (rev 59)

```
[…]
[263232.060912] e1000e 0000:00:19.0 eno1: NIC Link is Down
[263237.160937] e1000e 0000:00:19.0 eno1: NIC Link is Up 1000 Mbps Full 
Duplex, Flow Control: Rx/Tx
[263238.142253] e1000e 0000:00:19.0 eno1: NIC Link is Down
[263245.687208] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.
[263245.687212] iwlwifi 0000:02:00.0: reporting RF_KILL (radio disabled)
[263245.699263] iwlwifi 0000:02:00.0: Disabled INTA bits 0x10000000 were 
pending
[263246.796994] e1000e 0000:00:19.0 eno1: NIC Link is Up 1000 Mbps Full 
Duplex, Flow Control: Rx/Tx
[263247.778192] e1000e 0000:00:19.0 eno1: NIC Link is Down
[263252.770667] e1000e 0000:00:19.0 eno1: NIC Link is Up 1000 Mbps Full 
Duplex, Flow Control: Rx/Tx
[263253.751948] e1000e 0000:00:19.0 eno1: NIC Link is Down
[…]
```

Enabling the debug message with

     echo "module e1000e +p" | sudo tee 
/sys/kernel/debug/dynamic_debug/control

there is

```
[263463.845944] e1000e 0000:00:19.0 eno1: NIC Link is Up 1000 Mbps Full 
Duplex, Flow Control: Rx/Tx
[263464.839339] e1000e 0000:00:19.0 eno1: NIC Link is Down
[263469.658556] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x1
[263469.658616] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x1
[263471.542403] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x1
[263471.542480] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x1
[263473.454131] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x1
[263473.454212] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x1
[263473.454280] e1000e 0000:00:19.0 eno1: 1000 Mbps, Full Duplex
[263473.454298] e1000e 0000:00:19.0 eno1: Setting page 0x0
[263473.454360] e1000e 0000:00:19.0 eno1: writing PHY page 0 (or 0x0 
shifted) reg 0x10
[263473.454420] e1000e 0000:00:19.0 eno1: Setting page 0x0
[263473.454479] e1000e 0000:00:19.0 eno1: writing PHY page 0 (or 0x0 
shifted) reg 0x11
[263473.454538] e1000e 0000:00:19.0 eno1: Setting page 0x6080
[263473.454596] e1000e 0000:00:19.0 eno1: reading PHY page 772 (or 
0x6080 shifted) reg 0x1c
[263473.454656] e1000e 0000:00:19.0 eno1: Setting page 0x6080
[263473.454714] e1000e 0000:00:19.0 eno1: writing PHY page 772 (or 
0x6080 shifted) reg 0x1c
[263473.454773] e1000e 0000:00:19.0 eno1: Setting page 0x6040
[263473.454831] e1000e 0000:00:19.0 eno1: reading PHY page 770 (or 
0x6040 shifted) reg 0x11
[263473.454890] e1000e 0000:00:19.0 eno1: Setting page 0x6040
[263473.454948] e1000e 0000:00:19.0 eno1: writing PHY page 770 (or 
0x6040 shifted) reg 0x11
[263473.455059] e1000e 0000:00:19.0 eno1: 1000 Mbps, Full Duplex
[263473.455073] e1000e 0000:00:19.0 eno1: Setting page 0x6080
[263473.455131] e1000e 0000:00:19.0 eno1: reading PHY page 772 (or 
0x6080 shifted) reg 0x14
[263473.455190] e1000e 0000:00:19.0 eno1: Setting page 0x0
[263473.455248] e1000e 0000:00:19.0 eno1: writing PHY page 0 (or 0x0 
shifted) reg 0x10
[263473.455307] e1000e 0000:00:19.0 eno1: Setting page 0x0
[263473.455365] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x11
[263473.455424] e1000e 0000:00:19.0 eno1: Setting page 0x0
[263473.455482] e1000e 0000:00:19.0 eno1: writing PHY page 0 (or 0x0 
shifted) reg 0x10
[263473.455541] e1000e 0000:00:19.0 eno1: Setting page 0x0
[263473.455599] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x11
[263473.455658] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x5
[263473.455716] e1000e 0000:00:19.0 eno1: Setting page 0x0
[263473.455774] e1000e 0000:00:19.0 eno1: writing PHY page 0 (or 0x0 
shifted) reg 0x10
[263473.455833] e1000e 0000:00:19.0 eno1: Setting page 0x0
[263473.455891] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x11
[263473.455950] e1000e 0000:00:19.0 eno1: Setting page 0x6080
[263473.456008] e1000e 0000:00:19.0 eno1: writing PHY page 772 (or 
0x6080 shifted) reg 0x14
[263473.456071] e1000e 0000:00:19.0 eno1: hw->fc.current_mode = 3
[263473.456078] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x1
[263473.456140] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x1
[263473.456201] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x4
[263473.456262] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x5
[263473.456322] e1000e 0000:00:19.0 eno1: Flow Control = FULL.
[263473.456326] e1000e 0000:00:19.0 eno1: 1000 Mbps, Full Duplex
[263473.456330] e1000e 0000:00:19.0 eno1: hw->fc.current_mode = 3
[263473.456340] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x0
[263473.456401] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x1
[263473.456463] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x4
[263473.456524] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x5
[263473.456585] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x6
[263473.456646] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x9
[263473.456708] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0xa
[263473.456769] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0xf
[263473.456829] e1000e 0000:00:19.0 eno1: 1000 Mbps, Full Duplex
[263473.456836] e1000e 0000:00:19.0 eno1: NIC Link is Up 1000 Mbps Full 
Duplex, Flow Control: Rx/Tx
[263474.458100] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x1
[263474.458169] e1000e 0000:00:19.0 eno1: reading PHY page 0 (or 0x0 
shifted) reg 0x1
[263474.458233] e1000e 0000:00:19.0 eno1: NIC Link is Down
```

Removing and loading the module *e1000e* did not help. Suspending and 
resume did not either. Only powering off the system (maybe restart would 
have worked too).

The 8 MB output of `dmesg` (still missing the early messages) [1] 
contains more lines from the subsequent tries.

It only happened once, and I am unable to reproduce it.


Kind regards,

Paul


[1]: https://owww.molgen.mpg.de/~pmenzel/linux-5.19.6--messages.txt
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Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-09-30 15:56 [Intel-wired-lan] Link does not come up after resuming from ACPI S3 Paul Menzel
2022-10-02  6:57 ` Neftin, Sasha
2022-10-02  7:52   ` Paul Menzel
2022-10-02 13:27     ` Neftin, Sasha

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