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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Kworker using 100% CPU"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76732#c11">Comment # 11</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Kworker using 100% CPU"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76732">bug 76732</a>
from <span class="vcard"><a class="email" href="mailto:patrick.clara@gmail.com" title="patrick.clara@gmail.com">patrick.clara@gmail.com</a>
</span></b>
<pre>Maybe now I can clarify a little bit.
If nouveau loads at boot, the problem is always there, even with
drm_kms_helper.poll=0.
If nouveau is blacklisted at boot i have two possible situations:
1)
- i have gdm on the screen
- through ssh load drm_kms_helper with poll=0
- load nouveau
- the screen goes black, or sometimes it displays some rubbish
- in dmesg whis appears:
[ 66.938644] pci_pm_runtime_suspend(): nouveau_pmops_runtime_suspend+0x0/0xd0
[nouveau] returns -22
- i press ctrl+alt+F1 and nothing happens but this appears in dmesg:
[ 175.868791] detected fb_set_par error, error code: -22
-> CPU load is normal
2)
- switch to tty1
- through ssh load drm_kms_helper with poll=0
- load nouveau
- screen changes resolution and still works, also changing tty works
- CPU load at 100%
All the 3 situations are reproducible all the time</pre>
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