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22 Posts

06-09-2019

ES

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Thinkpad X1 P1 external display not recovering correctly from sleep (Thunderbolt, Display Audio)

2019-06-16, 20:59 PM

  • P1 i7-8850H, 32GB RAM, Quadro P200 conected to a LG 32UD99-W

Both in Windows 1809 and 1903 when resuming from sleep it will randomly happen that:

  • Audio through the external display is lost. Audio device shows a warning mark and you have to disable/enable in device manager to get it back working.
  • External display is no longer recognized (2 times in 24 hours) you have to disable/enable the Nvidia Quadro P2000 in device manager to get it back working. 

Connectivity is unreliable regarding internal graphics, external screens and thunderbolt.

 

It seems to me that these recurring graphics, display and thunderbolt issues found in P1 X1 machines are related to it.

 

This is a summary of bios versions with fixes related to issues alike.


<1.21>
UEFI: 1.21 / ECP: 1.10
- (Fix) Fixed an issue where WMI BootDisplayDevice option is incorrect.
- (Fix) Fixed an issue where the system might not resume from hibernation on Discrete Graphics mode with Windows10 version 1809.

<1.19>
UEFI: 1.19 / ECP: 1.10
- (Fix) Fixed an issue where the system might BSOD when connected the external monitor.(Note)
NVIDIA Graphics Driver v25.21.14.1735 or later version is required.
<1.18>
UEFI: 1.18 / ECP: 1.08u
- (Fix) Fixed an issue where the system might not boot with Hybrid Graphics.
- (Fix) Fixed an issue where the system might not boot when disabled Audio device by ThinkPad Setup on UEFI BIOS version 1.15 and 1.17.
<1.17>
UEFI: 1.17 / ECP: 1.08
- (Fix) Fixed an issue where the system might not boot with Discrete Graphics.
- (Fix) Fixed an issue where the system will black screen under OS environment.
<1.15>
UEFI: 1.15 / ECP: 1.08
- (Fix) Fixed an issue where the system might hang up when Thunderbolt BIOS Assist Mode is changed on Diagnostics Boot Mode.
<1.13>
<1.12>
<1.10>
<1.09>
<1.08>
<1.07>


 

 

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2 Posts

06-17-2019

US

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Re: Thinkpad X1 P1 external display not recovering correctly from sleep (Thunderbolt, Display Audio)

2019-06-17, 2:48 AM

I have similar issues on my X1 Extreme. I've noticed the computer hard-locking on DISPLAY SLEEP. I run the laptop in Discrete only mode so when the GPU goes it kills the system, if I run in Optimus mode I am able to manually reload the Nvidia card and the machine doesn't seem to crash. Another thing interesting is I can actually hear the windows "disconnect" sound before the system crashes.

 

I've found that it depends on what applications I have open and I seemed to be getting a lot of crashes with firefox on certain websites, as soon as the display went to sleep instant hard lock with the fans revved to max. I found one setting hidden in the advanced power management configuration PCI Express "Link State Power Management" that I switched to off and have so far not had any crashes since then but I'm doubtful this is a permanent solution. The weird thing is that when I run powercfg -ENERGY from the command prompt it states:

 

Platform Power Management Capabilities: PCI Express Active-State Power Management (ASPM) Disabled
PCI Express Active-State Power Management (ASPM) has been disabled due to a known incompatibility with the hardware in this computer.
 
If it's disabled I don't see why switching the setting to OFF would make a difference unless there is some bug in windows and it's doing it anyway. I've looked up and down in the BIOS and system settings, reinstalled drivers, reimaged my drive. Oh and this is my 2nd X1E to exhibit this behavior as the first one was RMAd for other reasons (USB/AUDIO issues). The only positive thing about this whole situation is that aside from this issue the machine has been rock solid and I don't experience any crashes while I'm using it. I had more problems with the Macbook Pro 2017 this machine replaced so I can just live with it for now and hope it gets fixed in a BIOS update.
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22 Posts

06-09-2019

ES

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  • Posts: 22
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  • Message 3 of 4

Re: Thinkpad X1 P1 external display not recovering correctly from sleep (Thunderbolt, Display Audio)

2019-06-17, 17:12 PM

A litle update to the issue. 

 

It seems that it has to do with the computer going into hibernate ( or deep sleep ) after a long sleep period

  • High Definition Audio Device stops working and requieres a enable/disable to go back working.
  • I still have times that monitor is not even detected.
  • This issue seems to be the same as this one. There are other models suffering from the same.

 

 

 

 

 

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22 Posts

06-09-2019

ES

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  • Posts: 22
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  • Message 4 of 4

Re: Thinkpad X1 P1 external display not recovering correctly from sleep (Thunderbolt, Display Audio)

2019-06-23, 0:06 AM

As for today I've discovered external monitor not switching on after long periods of time is 32UD99-W monitor fault.


There is a setting in the monitor that reads Automatic Standby that will cause the problem. Once the monitor reaches the threshold it will not wake up or recognize the signal in the port it went to sleep. Interestingly It will say that signal is detected in a different input and will prompt you to switch will still connected to the same input. 
It's almost certainly a firmware fault in the monitor.

It' is indeed not necessary to have it enabled as it only performs some kind of force standby whenever it detects that the image didn't change for a long period of time. In a normal scenario the computer would trigger screen saver, black screen or sleep mode. This is therefore not needed.

The monitor will still go to standby normally when no signal is detected.

About the audio. 
I still get the yellow mark at times and need to disable/re-enable the audio device to get it back working.

I will continue with the tests  and update the thread.

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