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Last week, my laptop display unexpectedly decided to go haywire while it was switching graphic cards (going from ATI Radeon to Intel GMA). Now the image is displayed "right-to-left" instead of the normal "left-to-right". Some of you might already be thinking that it's just the screen inversion/rotation of the display driver, but NO, it's definitely a hardware problem as this behavior starts as soon as the computer boots with the BIOS screen and I have tried every setting I could think of.
Conversely, the display is fine with an external screen, both on VGA and HDMI outputs.
I have included two photos so that you can understand what the problem is about:
Laptop display: image is inverted + every other vertical line is swapped
External screen: image is normal
So now, since the laptop is out of warranty (but just 1.4yo and always handled with care) and I don't have the money to buy a new one (+ I think it would be a waste just for a display problem), I was thinking of simply getting a replacement screen (no problem installing that).
However, since I have not figured out exactly the root cause of the failure/current behavior, I also can't rule out that the problem might lie somewhere else. Thus I would like to know your view on the matter:
- Has anyone ever had the same problem?
- Do you think it's safe to assume that it's only a display problem since the VGA and HDMI outputs work fine?
Information about the computer
More informations about the computer if that can be of any help:
- Brand: Acer
- Model: TimelineX 4820TG (4820TG-334G32Mnks to be exact)
- Graphic card: ATI Radeon Mobility HD5470 / Intel GMA (switchable graphics)
- Year of purchase: October 2010 (labels indicate if was manufactured May 2010)
Link to the Service Manual.
New information about screen (+datasheet)
I have tried to disassemble the screen (hoping it would be something easily resolved like a loose cable connection). This attempt was unsuccessful for solving my problem, but allowed me to note down the exact screen model:
- Manufacturer: AU Optronics (AUO)
- Model: B140XW03 V.0
- Version: H/W:0A F/W:1
And Google helped me find the relevant datasheet. However my limited knowledge on the subject did not allow me to get much out of this document for solving the issue: I hope others can find it more helpful...
I'm sorry I could not include the image directly in the question, but apparently I'm not allowed to do that as a (almost) new user... – Federico – 2012-02-14T21:19:07.143
Fixed the photos for you (: – BloodPhilia – 2012-02-14T21:21:58.353
Can you include the specific make and model of your laptop? And perhaps year purchased? It would make it a lot easier to research your particular hardware. – Ben Richards – 2012-02-14T21:27:36.070
Have you tried mirroring the screen via ATI settings? – soandos – 2012-02-14T21:30:03.287
BloodPhilia: thanks for the photos, sidran32: I've updated the question with the information, soandos: yes, I've tried that and in that case the display is fine on the external monitor (although not optimal as not in its native resolution) and still inverted on the integrated screen – Federico – 2012-02-14T21:43:16.103
Could you clarify please? You state: > ...decided to go haywire while it was switching graphic cards (going
JonnyBoats: sorry, this was obvious to me, but obviously needs clarification: this laptop has two graphic cards built-in, ATI Radeon HD (high-end) and Intel GMA (low-end). It is possible via software to switch between them as needed: for instance, when the computer is disconnected from the wall adapter, the system (ATI software) asks if I want to switch to the Intel GC to reduce power consumption from the battery (that's what happened when the problem occurred) – Federico – 2012-02-14T21:57:11.730
Stab in the dark: Is there a BIOS setting that can affect this? What if you reset the BIOS to factory default settings (after writing down existing settings, just in case.) – Hand-E-Food – 2012-02-14T22:17:17.797
@Hand-E-Food Well I looked at all the BIOS setting and the only one I have is "Graphic card: Switchable/Discrete". The latter option, which I have tried "just-in-case", disables the switching ability and leaves the system with only the ATI graphic card, but has no effect whatsoever on my issue. However the number of options available in BIOS is very limited compared to the desktop PCs that I have configured: I guess there must be a trick to enable advanced configuration but I don't know it (and I doubt it would help with my screen problem...) – Federico – 2012-02-14T22:46:56.920
You bought it in 2010 and still got that ugly plastic cover? Sheesh. – Apache – 2012-02-14T23:57:10.270
@Shiki Didn't I say that I handled it with care? ;-) – Federico – 2012-02-15T00:01:31.713
@Federico I tried to do the same with my ThinkPad. Can't help it it's got kicked in the screen with a football ball. Nothing happened though. (It's also fell off in a bus from ~2m high, to the floor. And so on, and so on.) Yet, not a scratch so far! =D – Apache – 2012-02-15T00:08:48.503
What happens when you switch back between the graphics cards? – toomanyairmiles – 2012-02-15T00:14:06.467
@toomanyairmiles I can switch back and forth between graphic cards, but the problem remains on the laptop screen, no matter what GPU I'm currently using... – Federico – 2012-02-15T13:23:06.483
@Federico you've tried going back to the drivers/os that shipped with your laptop? – toomanyairmiles – 2012-02-15T13:43:04.870
@toomanyairmiles I've not tried reverting the drivers to the original version, but I guess it couldn't hurt giving it a try (maybe they include some sort of firmware flash/reset)...
As I'm 99,9% sure it's a hardware problem (appears with BIOS screen), reinstalling OS (Windows) is just out of question, except if there is really STRONG evidence this could help! – Federico – 2012-02-15T14:08:57.080