Bug 1260346 - wireless internet hardware not detected after updating kernel-core without kernel-modules
wireless internet hardware not detected after updating kernel-core without ke...
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: Kernel Maintainer List
Fedora Extras Quality Assurance
: Reopened
Depends On:
  Show dependency treegraph
Reported: 2015-09-06 01:59 EDT by Peter H. Jones
Modified: 2015-09-15 11:36 EDT (History)
6 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2015-09-15 11:36:11 EDT
Type: Bug
Regression: ---
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Documentation: ---
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RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
dmesg of failing kernel (69.76 KB, text/plain)
2015-09-06 01:59 EDT, Peter H. Jones
no flags Details
dmesg of previous kernel that works (80.15 KB, text/plain)
2015-09-06 02:01 EDT, Peter H. Jones
no flags Details

  None (edit)
Description Peter H. Jones 2015-09-06 01:59:57 EDT
Created attachment 1070629 [details]
dmesg of failing kernel

Description of problem:
Wireless internet hardware not detected on a Fujitsu Lifebok

Version-Release number of selected component (if applicable):

How reproducible:
Every time

Steps to Reproduce:
2.Configure wifi

Actual results:
No wifi hardware visible

Expected results:
Wifi should be visible

Additional info:
kernel-core-4.1.6-200.fc22.x86_64 works fine
Comment 1 Peter H. Jones 2015-09-06 02:01:01 EDT
Created attachment 1070630 [details]
dmesg of previous kernel that works
Comment 2 Peter H. Jones 2015-09-07 06:13:15 EDT
Works with
Comment 3 Peter H. Jones 2015-09-15 11:20:14 EDT
I was able to reproduce the behaviour by installing only
kernel-core-4.1.7-200.fc22.x86_64 without the corresponing kernel-modules rpm. Dnf allowed me to do that without complaining about missing dependencies. After I installed only kernel-core, I found:
The system would not power off from the screen menu. When I tried a poweroff command as root, I got an error message and no power-down.init 0 gave the usual warning to all consoles, but nothing further happened. After powering-down manually and restarting in kernel-4.1.7, there was no wifi menu available.

I shut down and restarted in kernel-4.1.6. I removed 4.1.7 and tried to install only kernel-modules-4.1.7. I got a dependency message. When I installed both kernel-core-4.1.7 and kernel-modules-4.1.7 and restarted in kernel-4.1.7, the system works fine.

There are two possible bugs here:
1) Failure to power down when only a new kernel-core is installed
2) Ability to install and run only a different kernel-core. Seeing the great degradation of the system, I would have liked a warning when I did that.
Comment 4 Josh Boyer 2015-09-15 11:36:11 EDT
The ability to install only kernel-core is intentional.  That is how our cloud products install a minimal kernel image.

For normal machines, such as a desktop or laptop, the default install has 3 packages:


The kernel package requires both kernel-core and kernel-modules.  If your machine is lacking the kernel package, you likely removed it at some point.  There is still no bug here.

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