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Bug 1294540 - Dell Inspiron 15 (intel graphics) backlight changes from usable value to very low in mid-boot and remains low. writing the existing value (837) into /sys/class/backlight/intel_backlight/brightness fixes it.
Dell Inspiron 15 (intel graphics) backlight changes from usable value to very...
Product: Fedora
Classification: Fedora
Component: systemd (Show other bugs)
i686 Linux
unspecified Severity low
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Assigned To: systemd-maint
Fedora Extras Quality Assurance
Depends On:
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Reported: 2015-12-28 17:15 EST by bruce damkoehler
Modified: 2016-12-20 12:26 EST (History)
6 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2016-12-20 12:26:42 EST
Type: Bug
Regression: ---
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RHEL 7.3 requirements from Atomic Host:
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Description bruce damkoehler 2015-12-28 17:15:13 EST
Description of problem:

On a Dell Inspiron 15 with intel iCore 3 and intel graphics, the backlight changes from usable value to very low in mid-boot and remains low.  writing the existing value (837) into /sys/class/backlight/intel_backlight/brightness fixes it. This is a KDE system installed from DVD. The problem persisted after applying patches. 

It sometimes corrects itself after 5-10 minutes. I "corrected" it by changing /etc/rc.d/rc.local to re-write the same value (837) into /sys/class/backlight/intel_backlight/brightness.

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

How reproducible:
every time the machine boots 

Steps to Reproduce:
1.boot the machine

Actual results:
described above

Expected results:
described above

Additional info:

00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)
Comment 1 Fedora End Of Life 2016-11-24 09:33:53 EST
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Comment 2 Fedora End Of Life 2016-12-20 12:26:42 EST
Fedora 23 changed to end-of-life (EOL) status on 2016-12-20. Fedora 23 is
no longer maintained, which means that it will not receive any further
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