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I've had this bug for a while but recently it god a lot worse.
Whenever I boot up my x220, wlan is either not present at all or DOWN and DORMANT and I cannot bring it up. The only thing that works is restarting.
This scenario fits fine with this part from the iwlegacy driver:
>If you have problems connecting to networks in general, random failures with your card on bootup
so I tried creating /etc/modprobe.d/iwlwifi.conf with options iwlwifi 11n_disable=1 but it solves nothing.
How can I get to the bottom of this ? It's really wierd.
Last edited by buttcake (2019-08-14 08:19:55)
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Anything in dmesg, or your journal?
Are you dual booting with Windows?
Moving to NC...
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I am not dual booting with windows.
Here's dmesg and journalctl when it starts down and dormant:
http://0x0.st/zVfQ.txt
http://0x0.st/zVfj.txt
and here they are when is starts up and dormant:
http://0x0.st/zVf2.txt
http://0x0.st/zVfe.txt
I mean there's no difference that's why I said I don't know how to tackle this.
Last edited by buttcake (2019-08-13 23:22:02)
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The links you provides only contain 9 or 10 lines of content rather than a whole dmesg or the whole journal for one boot which would include the dmesg.
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I am sorry I was under the impression only the information regarding iwlwifi is needed.
Last edited by buttcake (2019-08-14 08:20:14)
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The context is important https://bbs.archlinux.org/viewtopic.php?id=57855
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Ok, got the full dmesg.
First case where it works: http://0x0.st/zVff.txt
Second case where it doesn't: http://0x0.st/zVfO.txt
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Entropy issue?
On the failure case
[ 107.245491] random: crng init done
While on the successful case it is much earlier
[ 9.045300] random: crng init done
If the system supports RDRAND you could try adding the boot parameter random.trust_cpu=on if it does not try installing and enabling haveged.
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Holy shit that was it I would have never thought about that. All this time wasted on trying out different combinations of modprobe options. Thank you a lot.
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