17.10 Problems brainstorm

[Joachim Martillo]

I don't see anything like your output via dmesg. Of course, I am using a D1000 with only one external monitor, a flash drive, and a Logitech webcam attached to it.

What do you have attached to your D6000?

Your setup seems much more complex than mine.

I execute the following command.

dmesg | grep -i usb | tail

Here is all I see.

[   33.652821] usb usb4: New USB device found, idVendor=1d6b, idProduct=0003
[   33.652822] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[   33.652823] usb usb4: Product: xHCI Host Controller
[   33.652824] usb usb4: Manufacturer: Linux 4.13.0-16-generic xhci-hcd
[   33.652825] usb usb4: SerialNumber: 0000:39:00.0
[   33.652941] hub 4-0:1.0: USB hub found
[   38.634187] usb usb4: USB disconnect, device number 1
[   38.635008] xhci_hcd 0000:39:00.0: USB bus 4 deregistered
[   38.635043] usb usb3: USB disconnect, device number 1
[   38.636173] xhci_hcd 0000:39:00.0: USB bus 3 deregistered

I have a second USB hub attached to my machine in addition to the D1000.

[Wunsz]

The dmesg output with error is when disconnect happens.

My setup is:
Samsung FHD display via HDMI
Dell FHD display via DisplayPort
Lenovo USB mouse
Lenovo USB keyboard
Phillips headphones via 3.5mm jack (no microphone)


Here is my output (with one DisplayPort monitor attached)

[ 4919.472870] usb 4-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 4919.472871] usb 4-1.1: Product: Dell Universal Dock D6000
[ 4919.472871] usb 4-1.1: Manufacturer: DisplayLink
[ 4919.472872] usb 4-1.1: SerialNumber: 1707156658
[ 4919.486606] usb 4-1.1: Warning! Unlikely big volume range (=767), cval->res is probably wrong.
[ 4919.486608] usb 4-1.1: [4] FU [Mic Capture Volume] ch = 2, val = -4592/7680/16
[ 4919.487133] usb 4-1.1: Warning! Unlikely big volume range (=672), cval->res is probably wrong.
[ 4919.487134] usb 4-1.1: [7] FU [Dell USB Audio Playback Volume] ch = 6, val = -10752/0/16
[ 4919.507917] cdc_ncm 4-1.1:1.5 usb0: register 'cdc_ncm' at usb-0000:3e:00.0-1.1, CDC NCM, 9c:eb:e8:53:65:5a
[ 4920.032505] cdc_ncm 4-1.1:1.5 enx9cebe853655a: renamed from usb0

[Joachim Martillo]

I recommend taking everything off the D6000 but one external display (try each external display as the lone display) and then add each other device back to the D6000 one by one (in every combination) until you see the error messages. If it's just a specific device combination that causes the problem, you should be able to pin it down in a reasonable amount of time. You may have to obtain a second USB hub (as I have) in order to follow the suggested procedure.

[Wunsz]

Hi,
I have tested multiple combinations and seems that following error:

[pią lis 10 09:12:26 2017 <    0,000072>] [drm:drm_wait_vblank [drm]] *ERROR* Unsupported type value 0x121, supported mask 0x7400003f

happens only when I connect one specific Samsung display (tested it on coworker's display - also Samsung, also via HDMI) and no spam happened. Fortunately I will have it replaced soon.

Today i intend to test all peripherals connected to laptop (with the Samsung display via HDMI) and Dell display via DP via Dock to see if I will get any disconnects. Wish me luck!

[Wunsz]

Hello again,
after testing some combination I ended up with USB mouse & keyboard + DELL display connected via dock and Samsung via HDMI. The tell displays goes blank from time to time but does not disconnect (display manager thinks the display is still there, I can even move windows from that display).

On error, dmseg says:

[pią lis 17 08:45:03 2017 <    0,072060>] usb 4-1.1: reset SuperSpeed USB device number 5 using xhci_hcd
[pią lis 17 08:45:03 2017 <    0,034009>] usb 4-1.1: Warning! Unlikely big volume range (=767), cval->res is probably wrong.
[pią lis 17 08:45:03 2017 <    0,000005>] usb 4-1.1: [4] FU [Mic Capture Volume] ch = 2, val = -4592/7680/16
[pią lis 17 08:45:03 2017 <    0,000720>] usb 4-1.1: Warning! Unlikely big volume range (=672), cval->res is probably wrong.
[pią lis 17 08:45:03 2017 <    0,000002>] usb 4-1.1: [7] FU [Dell USB Audio Playback Volume] ch = 6, val = -10752/0/16
[pią lis 17 08:45:03 2017 <    0,027510>] cdc_ncm 4-1.1:1.5: MAC-Address: 9c:eb:e8:53:65:5a
[pią lis 17 08:45:03 2017 <    0,000002>] cdc_ncm 4-1.1:1.5: setting rx_max = 16384
[pią lis 17 08:45:03 2017 <    0,000066>] cdc_ncm 4-1.1:1.5: setting tx_max = 16384
[pią lis 17 08:45:03 2017 <    0,000232>] cdc_ncm 4-1.1:1.5 usb0: register 'cdc_ncm' at usb-0000:3e:00.0-1.1, CDC NCM, 9c:eb:e8:53:65:5a
[pią lis 17 08:45:03 2017 <    0,004123>] usb 4-1.1: usbfs: process 7796 (DeviceWindowDis) did not claim interface 0 before use
[pią lis 17 08:45:03 2017 <    0,003552>] cdc_ncm 4-1.1:1.5 enx9cebe853655a: renamed from usb0
[pią lis 17 08:45:03 2017 <    0,077602>] IPv6: ADDRCONF(NETDEV_UP): enx9cebe853655a: link is not ready
[pią lis 17 08:45:03 2017 <    0,000068>] IPv6: ADDRCONF(NETDEV_UP): enx9cebe853655a: link is not ready
[pią lis 17 08:45:03 2017 <    0,020318>] cdc_ncm 4-1.1:1.5 enx9cebe853655a: network connection: disconnected

Funny thing is, it seems to be totally random. Yesterday it happened only once. Today it already happened 4 times...

One more thing I noticed today is that sometimes dmesg spits out a bunch of these:

[pią lis 17 08:53:20 2017 <    0,009739>] pcieport 0000:00:1d.0: AER: Corrected error received: id=00e8
[pią lis 17 08:53:20 2017 <    0,000018>] pcieport 0000:00:1d.0: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e8(Transmitter ID)
[pią lis 17 08:53:20 2017 <    0,000012>] pcieport 0000:00:1d.0:   device [8086:a118] error status/mask=00001000/00002000
[pią lis 17 08:53:20 2017 <    0,000008>] pcieport 0000:00:1d.0:    [12] Replay Timer Timeout

Which seems to be an error with my SSD disk:

*-pci:3             
             description: PCI bridge
             product: Sunrise Point-H PCI Express Root Port #9
             vendor: Intel Corporation
             physical id: 1d
             bus info: pci@0000:00:1d.0
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:124 memory:ede00000-edefffff
           *-storage
                description: Non-Volatile memory controller
                product: NVMe SSD Controller SM961/PM961
                vendor: Samsung Electronics Co Ltd
                physical id: 0
                bus info: pci@0000:04:00.0
                version: 00
                width: 64 bits
                clock: 33MHz
                capabilities: storage pm msi pciexpress msix nvm_express bus_master cap_list
                configuration: driver=nvme latency=0
                resources: irq:16 memory:ede00000-ede03fff

Sometimes I belive I could write a blog about my hardware issues xD