Receiving random short freezes on our IGEL mobile clients (IGEL OS 11.04.245)


Hi All,

I get random short freezes on our IGEL mobile clients (OS FW 11.04.245).

I can see that also a permanent ping test to a webserver will freeze for few seconds. This happens approx. one time an hour.

In the logs I can see this messages…..

***

2021-01-26T12:28:25.163048+01:00 KFX17001 systemd[1]: igel-battery-status.service: Succeeded.

2021-01-26T12:29:51.107167+01:00 KFX17001 xfwm4[8953]: Nicht unterstützte Hilfstaste »<Control><Super>d«

2021-01-26T12:30:12.197574+01:00 KFX17001 kernel: [ 7717.052981] perf: interrupt took too long (5196 > 5155), lowering kernel.perf_event_max_sample_rate to 38250

2021-01-26T12:30:25.112769+01:00 KFX17001 systemd[1]: Started Report battery status to UMS.

2021-01-26T12:30:25.188630+01:00 KFX17001 systemd[1]: igel-battery-status.service: Succeeded.

***

I can’t say if this also happens on an older firmware or if I connected via wired network.


Hi Eric, which kind of devices are concerned and does the device completely go irresponsive or the Session?


There is a USB Headset, USB Mouse/Keyboard Receiver, 2x Displays connected.

I thin only the session will be irresponsive because I could minimize the session window and saw that the ping will not coninued for a short time.

What it is: “Nicht unterstützte Hilfstaste »<Control><Super>d«”

I can see this message to the same time when the issue occured.


Should be

STRG SHIFT d

is there such a hotkey maybe pressed by a user?

Is the device roaming between Wifi cells?


It’s the device which is used by me at the moment. I didn’t press this combination.

If I do, I can’t see any actions but the message appears again in the logs…

+++++++++++++++++++++++

2021-01-26T15:21:43.584512+01:00 KFX17001 xfwm4[9047]: Nicht unterstützte Hilfstaste »<Control><Super>d«

2021-01-26T15:22:40.220497+01:00 KFX17001 gnome-system-lo[13335]: gtk_text_buffer_emit_insert: assertion ‘g_utf8_validate (text, len, NULL)’ failed

2021-01-26T15:22:44.721838+01:00 KFX17001 systemd[1]: Started Report battery status to UMS.

2021-01-26T15:22:44.775608+01:00 KFX17001 systemd[1]: igel-battery-status.service: Succeeded.

2021-01-26T15:23:09.789939+01:00 KFX17001 xfwm4[9047]: Nicht unterstützte Hilfstaste »<Control><Super>d«

2021-01-26T15:23:15.599683+01:00 KFX17001 wpa_supplicant_wrapper[5733]: wlan0: WPA: Group rekeying completed with 2c:91🆎99:70:78 [GTK=CCMP]

2021-01-26T15:23:15.701282+01:00 KFX17001 gnome-system-lo[13335]: gtk_text_buffer_emit_insert: assertion ‘g_utf8_validate (text, len, NULL)’ failed

2021-01-26T15:23:16.164050+01:00 KFX17001 gnome-system-lo[13335]: gtk_text_buffer_emit_insert: assertion ‘g_utf8_validate (text, len, NULL)’ failed

2021-01-26T15:23:38.487793+01:00 KFX17001 xfwm4[9047]: Nicht unterstützte Hilfstaste »<Control><Super>d«

2021-01-26T15:23:49.060167+01:00 KFX17001 gnome-system-lo[13335]: gtk_text_buffer_emit_insert: assertion ‘g_utf8_validate (text, len, NULL)’ failed

2021-01-26T15:23:49.419823+01:00 KFX17001 gnome-system-lo[13335]: gtk_text_buffer_emit_insert: assertion ‘g_utf8_validate (text, len, NULL)’ failed

2021-01-26T15:24:09.837773+01:00 KFX17001 xfwm4[9047]: Nicht unterstützte Hilfstaste »<Control><Super>d«

2021-01-26T15:24:42.793994+01:00 KFX17001 xfwm4[9047]: Nicht unterstützte Hilfstaste »<Control><Super>d«

2021-01-26T15:24:43.651587+01:00 KFX17001 xfwm4[9047]: Nicht unterstützte Hilfstaste »<Control><Super>d«

2021-01-26T15:24:44.721618+01:00 KFX17001 systemd[1]: Started Report battery status to UMS.

2021-01-26T15:24:44.786788+01:00 KFX17001 systemd[1]: igel-battery-status.service: Succeeded.

2021-01-26T15:25:09.685551+01:00 KFX17001 xfwm4[9047]: Nicht unterstützte Hilfstaste »<Control><Super>d«

2021-01-26T15:26:01.403564+01:00 KFX17001 gnome-system-lo[13335]: gtk_text_buffer_emit_insert: assertion ‘g_utf8_validate (text, len, NULL)’ failed

2021-01-26T15:26:01.827421+01:00 KFX17001 gnome-system-lo[13335]: gtk_text_buffer_emit_insert: assertion ‘g_utf8_validate (text, len, NULL)’ failed

2021-01-26T15:26:19.093587+01:00 KFX17001 xfwm4[9047]: Nicht unterstützte Hilfstaste »<Control><Super>d«

2021-01-26T15:26:44.721287+01:00 KFX17001 systemd[1]: Started Report battery status to UMS.

2021-01-26T15:26:44.789539+01:00 KFX17001 systemd[1]: igel-battery-status.service: Succeeded.

+++++++++++++++++++++++

The device should also not roam because there is only one configured wlan.

The freezes seems to be disappeared after rebooting and don’t do any permanent pings.

Hi,

I could see that the wifi lost random the connection to my wifi repeater.

2021-01-29T13:44:52.942329+01:00 KFX17001 kernel: [18135.357932] wlan0: disconnect from AP 2c:91🆎99:70:78 for new auth to 2c:91🆎99:70:79

2021-01-29T13:44:52.950388+01:00 KFX17001 kernel: [18135.368266] wlan0: authenticate with 2c:91🆎99:70:79

2021-01-29T13:44:52.963550+01:00 KFX17001 kernel: [18135.381810] wlan0: send auth to 2c:91🆎99:70:79 (try 1/3)

____________

2021-01-29T13:44:53.022407+01:00 KFX17001 kernel: [18135.437259] wlan0: Limiting TX power to 20 (23 – 3) dBm as advertised by 2c:91🆎99:70:79

2021-01-29T13:44:53.494492+01:00 KFX17001 kernel: [18135.910730] wlan0: deauthenticated from 2c:91🆎99:70:79 (Reason: 34=DISASSOC_LOW_ACK)

2021-01-29T13:44:53.566193+01:00 KFX17001 wpa_supplicant_wrapper[5671]: wlan0: CTRL-EVENT-DISCONNECTED bssid=2c:91🆎99:70:79 reason=34

The distance between my wifi notebook and repeater is only few meters in the same room. I don’t have these issue with exactly the same hardware on windows 10.

Sometimes it works for multiple hours, sometimes it will be short disconnect and connect again multiple times.

I can see that it will switch between 5GHz and 2,5Ghz.

I can see a speed of 866 MBit/s in 5GHz and 144 Mbit/s in 2.5GHz network. My repeater will doing both channels.


Can you limit the Device to one Range, 2,4Ghz preferred?


Thanks, I will check. But wouldn’t want to do this for all our clients at the end. But it’s very annoying when the igel do these switches multiples times a day and your remote session will freeze for few seconds.

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