XPS13Linux
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advancingu
Screen contrast is controlled by firmware
The screen brightness is controlled by firmware and correlates with the brightness of content on screen.
This means the screen automatically dims when dark content is shown and brightens when bright content is shown.
There is no known method to turn this mechanism off.
There's also an online test regarding this issue:
http://tylerwatt12.com/dc/
Yes, definitely fading in for me, i.e. my laptop is affected. Is there anything that can be done to stop this? It's highly annoying.
I spoke with Dell business support yesterday and was told there is an engineering team currently looking into this together with the display panel vendor, as apparently the brightness adjustment is done in the display firmware. They were now trying to expose an on/off switch in the BIOS to allow the user to toggle the behavior, however the support person was not able to tell me when or even if there would be a BIOS update.
The funny thing about this "feature" is that it is supposed to work the other way around: increase brightness with a dark background, and decrease it on a bright background - this would be useful.
Definitely, it's not a feature, it's a BUG.
Imagine that when you are hacking something with a dark themed editor/IDE, and then switch to your browser, this stupid adaptive brightness thing will burn you eyes.
I have to installed redshift to the system to reduce the bluish tint which make the screen even more glare, and another plugin in Chrome to make all white background grey to avoid my eyes been burnt, heck.
I checked with Dell business support again yesterday and unfortunately there is still no ETA for a fix.
Customer support as of today had no clue when the feature is going to be ready..
Any updates about this issue? I'm still looking for a solution, like a lot of us, I guess
I used to noticed this, but some time back I stopped seeing this behavior. I have completed the linked test several times, and I cannot reproduce this dynamic change in brightness at all. Unfortunately, I can't correlate this to anything that changed, but I don't believe I've seen this since A04. (I have a QHD display.)
Hey, uncon. I have an FHD screen and I'm definitely seeing this even after I've updated to A04.
My FHD screen ordered from Dell's website (256 GB, 8 GB ram options) definitely has this problem. With no clear timeframe for a fix, I think I have to return. Thanks for letting me down Dell!
@AndrewBogdanov @mkrems If you haven't yet done so, I suggest you contact Dell support and ask them about the issue and when it will be fixed. I've heard that they do listen to support to some degree, so the more negative feedback they get about this issue, the more likely they are going to be implementing a fix.
@advancingu Yeah, I talk to tech support a few days ago, and they took me through a process of reinstalling driver and firmware. I tried to tell him this was a known problem, and they really need to fix this as lots of people are upset and returning their laptops, but I don't think the message got through:(
If you have the official developer edition, it should be eligible for so called "ProSupport". Supposedly support personnel there is held to a higher quality standard than regular support. If you use chat to communicate with them you can also send them a link to this report.
I'm lucky that I don't have this problem, so it may depend on the hardware.
dmesg reports: Dell Inc. XPS 13 9343/0310JH, BIOS A04 05/15/2015 ELAN Touchscreen.
Xorg.0.log indicates: intel(0): EDID vendor "SHP", prod id 5153
get-edid confirms SHP panel, unknown model.
Could Dell have changed components, or fixed it in A04, or different SHP model/firmware?
Perhaps the touchscreen panel is not affected. Mine is the matte non-touch with 1920x1080 resolution and it suffers from this issue.
Xorg.0.log contains:
intel(0): EDID vendor "SHP", prod id 5152
I also have a matte non-touch version FHD. How can I check those logs that you provided?
This command works on Linux only. To determine if your model is affected, follow the link provided here.
Yeah, I tried that link and my screen shows logo via fading for 3 seconds or so.
Then please contact Dell support and tell them that you dislike this "feature" and ask them to provide an option to turn it off. This is the only chance to ever get rid of this behavior.
So, I've conacted Dell Support Agent yesterday and he was working with my machine remotely for 3 hours or so, trying defferent things like updating bios, drivers etc. The bottom line: this is a hardware issue of integrated video card. So I will be sending request for warranty mother board replacement. I will update on this topic when it will be replaced to the new one.
Such a shame that this issue hasn't been (officially) addressed. I've been hoping to get an XPS 13 but currently it's unusable for photography.
Having said that - my housemate just bought a (FHD) XPS 13, and doesn't seem to have the brightness bug. I will try to find out what BIOS rev. he has and report back.
(Also on Windows 10, though this is irrelevant if it's firmware, I know.)
I think this bug might be happening for a limited range of devices. For example my video card also have some issue when running simple surface test, so it can be some kind of bug in hardware itself. I will be able to tell for sure only when my motherboard will be replaced. But the guy from support told me that this issue will go away with a new motherboard.
I don't think it's a bug as far as Dell is concerned, unfortunately - they clearly market it as a feature. Ridiculous that it cannot be disabled, though.
In this case I want a documented way to intentionally produce a bug that breaks this "feature" please...
I don't believe it's a feature in any way. Where did you see they've been market that?