OP once again, attempting to wrest back the topic to a simple Inspiron
5558 i5 laptop, no second adapter, running Intel 5500 graphics.
Previously, while updating F23's updates, including many Intel drivers
and kernel 4.7.7, I continue to see the blanking behavior, in the
console before loading the desktop GNOME system.
One again, invoking xrandr in a terminal within GNOME and issuing
xrandr -r 48 (at the native 1920x1080 resolution) stops the screen
from blanking 1 second after each keystroke. Issuing xrandr -r 60
causes the blanking to restart, and reinssuing the -r 48 restores the
screen to normal operation.
Also, cold shutdown and restart will also clear the behavior. Perhaps
on reboot, the video driver is left in an unstable state.
Update: updated to F24 due to F23 EOL, and running GNOME on Wayland,
not X with this version:
4.8.15-200.fc24.x86_64 #1 SMP Thu Dec 15 23:09:22 UTC 2016 x86_64
x86_64 x86_64 GNU/Linux
installed the latest updates via "Software" and upon reboot, the
machine was blinking again. Initial grub screen is fine and stable,
but dialog for LUKS password, sddm login screen, and GNOME on Wayland
are all blinking.
The xrandr trick no longer works, since Wayland isn't X. Cold shutdown
and restart did resolve the issue.
I find BZ fairly hostile. Can anyone suggest an existing bug report,
or the proper component to post this to?
On Tue, Oct 11, 2016 at 3:25 PM, Ted Roche <tedroche(a)gmail.com> wrote:
OP, here. The Inspiron (5558) has built-in Intel 5500 graphics.
Plugging in an HDMI external monitor and enabling it with the
"Display" applet in Settings causes the internal display to return to
the blanking behavior.The external monitor does not blink.
Using GNOME 3.18.2.
Playing a Youtube video in Chromium on the external monitor causes the
internal laptop display to stop blanking. Scrolling down the page
until the video is no longer visible, and the blanking starts
Thinking this is some "blank on inactive" timer gone wild. Any
suggestions on what to look at or poke around in?
On Tue, Oct 11, 2016 at 2:32 PM, Rick Stevens <ricks(a)alldigital.com> wrote:
> On 10/11/2016 11:19 AM, Tim Evans wrote:
>> On 10/11/2016 10:55 AM, Roberto Ragusa wrote:
>>> On 10/10/2016 09:30 PM, Tim Evans wrote:
>>>> On 10/10/2016 02:59 PM, Ted Roche wrote:
>>>> I regularly see something *somewhat* similar on my Lenovo T530.
>>>> Specifically, after running for a couple of days, it begins blanking
>>>> the screen after a reliable 15 seconds of inactivity.
>>>> At first, I thought this might be a hardware issue with the
>>>> lid/on-off switch, since I do close the lid when I'm away from the
>>>> system. However, I don't see this in Windows 10 on this dual-boot
>>>> Interestingly, when the screen returns from black after I touch a
>>>> key, it often returns to a different window (e.g., I was reading mail
>>>> in Thunderbird when it blanked, but Chrome appears when it lights
>>>> back up). AND, after a second or two, the screen switches back to
>>>> the original window (e.g., t-bird). This tends to suggest something
>>> In my case I see instants of black screen on a Lenovo P50 with
>>> Fedora 24, using Intel graphics.
>>> Looks like a refresh problem, or maybe something related to switching
>>> the panel to the right gfx adapter (there is a dormant nvidia too,
>>> with nouveau blacklisted).
>>> My compositor is kwin.
>> Thank you, Roberto. My T530 also has Intel graphics, but I have not
>> installed the Nvidia drivers--only the Nouveau that was installed at
>> install time. Not sure what you mean about "switching" adaptors.
> He means that if you have multiple graphics adapters, does switching
> your display to one of the other adapters exhibit the same problem.
> Since your T530 only has one graphics adapter, that doesn't apply. I
> guess you could try using an external monitor and see if the problem
> - Rick Stevens, Systems Engineer, AllDigital ricks(a)alldigital.com -
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