maemo.org Bugzilla – Bug 3300
"Display stays lit when charging" in control panel doesn't work if device booted with charger connected
Last modified: 2009-09-18 23:16:10 UTC
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STEPS TO REPRODUCE THE PROBLEM:
Select Control Panel -> Display
Select "When charging" as option under "Display stays lit"
Display should remain lit when charger is attached and powered up
Display dims and switches off after a few minutes
EXTRA SOFTWARE INSTALLED:
Has also been mentioned by another poster on maemo-users mailing list.
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9)
Annoyingly, I've just walked into the room to find my N800, which is on charge,
with the display still lit.
So reproducibility is actually not "always" after all.
If I work out what's different between times when it works and doesn't, I'll
Thanks in advance for any investigations, we'd love to have a good testcase on
Having had a play today, the way to trigger this problem appears to be to
restart the N800 with the power connected. After it's started, the light goes
out after a few minutes.
Disconnecting the power then reconnecting it causes the display to behave as
(In reply to comment #3)
> Having had a play today, the way to trigger this problem appears to be to
> restart the N800 with the power connected. After it's started, the light goes
> out after a few minutes.
> Disconnecting the power then reconnecting it causes the display to behave as
Is this 100% reproducible?
Setting hardware to N800.
I can confirm this on my N800 running a stock diablo install (4.2008.23-14).
Upon reboot, the "Display stays lit: When charging" setting is ignored, even
though the battery is being charged. Display will dim at "Brightness setting"
interval. If I unplug/replug the power, the display stays lit. Reproducible
This is a WONTFIX for Diablo (not critical enough).
Haven't seen an internal ticket for Fremantle yet.
This makes it very difficult to automate performance/unit tests on a farm of
(In reply to comment #8)
> This makes it very difficult to automate performance/unit tests on a farm of
What if you include in your test-case something like:
gconftool-2 --set --type=int /system/osso/dsm/display/inhibit_blank_mode 3
The number at the end is display mode which is one of:
* 0 - no inhibit
* 1 - inhibit dim with charger
* 2 - inhibit blank with charger (display still dims)
* 3 - inhibit dim (always)
* 4 - inhibit blank (always; display still dims)
(In reply to comment #9)
> What if you include in your test-case something like:
> gconftool-2 --set --type=int /system/osso/dsm/display/inhibit_blank_mode 3
Thanks for looking into this.
1) changed the Display control panel to Brightness: 2min, Switch off display:
5min, Display stays lit: When charging
2) uninstalled Moredimmingoptions
3) verified Display settings
4) ran |gconftool-2 --set --type=int
/system/osso/dsm/display/inhibit_blank_mode 3| as root while ssh'ed in
5) let the n810 sit, idle, plugged in.
6) noted that the screen dimmed ~2min later, went blank ~5min later.
There doesn't seem to be a /system directory; is that ok?
Also tried this after reboot, but ssh'ed in as root, su'ed to user, then ran
the gconftool-2 command. Screen dimmed after ~2min.
(In reply to comment #11)
> Also tried this after reboot, but ssh'ed in as root, su'ed to user, then ran
> the gconftool-2 command. Screen dimmed after ~2min.
Hm. It works on Fremantle. I thought it should work in Diablo too. David?
@Eero: no, it's not supported in Diablo, only in Fremantle.
Disconnecting and reconnecting the charger makes things work as they should,
thus I suspect that the first charger state signal from bme gets lost, making
mce not recognise that the charger is connected.
Closing as Fixed in Fremantle as per last comments.
This is a WONTFIX for Diablo as Diablo is in maintenance mode and Nokia will
only provide bugfixes for critical issues if at all.
For your interest the Mer project aims to provide a community backport of
Fremantle for N8x0 devices. See http://wiki.maemo.org/Mer for more information.
(Splitting product "Home applets" into "Desktop widgets" and "Statusbar
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