Omnimaga
Calculator Community => TI Calculators => Topic started by: ddmcdonald on August 19, 2013, 09:03:19 am
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A student has turned in a CX Nspire CAS with a screen that has been rotated 180 degrees. Everything works great, but it is upside down. I have called TI-Cares and they have no clue what happened.
I am sure it is a combination of key strokes. Can anyone help?
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No key stroke that I know of...
I wonder how he did that ;)
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First, try to remove the battery and put it back on again. More troubleshooting details here: https://epsstore.ti.com/OA_HTML/csksxvm.jsp?nSetNumber=11900
I have called TI-Cares and they have no clue what happened.
That's weird! If the above doesn't work, if i were you i would ask for a replacement unit for it can well be a hardware defect. Good luck.
BTW, Welcome to Omnimaga!
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Hi,
What is the OS version ?
If it is 3.1 it can be explained.
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Well this is an interesting problem, could they have put the screen in wrongly? You should try the things that SpiroH linked to; reset, unplug and replug the battery and in the worst case enter the maintenance menu and do a complete format.
[Edit: ]If it is 3.1 it can be explained.
How come so?
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[Edit: ]If it is 3.1 it can be explained.
How come so?
I only said it can, using Ndless and a conf-lose program put in /ndless/startup/ that patches the screen routines.
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Ah with ndless. I thought there was a possible bug in the 3.1 OS that could cause this kind of behaviour.
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Does this happen only within the OS, or at boot time too while the Nspire logo is displayed?
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You all are wonderful! I unplugged the battery and everything is fine now. I know I had unplugged the battery before and it went right back to the 180 rotation, but as of right now it is working!!!
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Oo. That maybe come from a wrong z-address...
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Well, I take that back. I had it up and running and then let it sit for a while to turn off. I just turned it back on and now everything is rotated again. I hit reset on the back and sure enough - even the startup screen runs upside down.
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'Should try reinstalling the OS. You maybe got a corrupted part somewhere...
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That wouldn't make sense if the (entire?) startup screen is rotated. Maybe there is something with the display controller, although I don't see a direct way to instruct the controller to rotate the display.
Is it possible to provide a picture of the device, and the OS version + the boot 1 and 2 versions?
You can find the OS version in [Settings -> Status] and the boot 1 / 2 versions in [Settings -> Status -> About].
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Have you ever used Nover? I wonder if some bad values could have caused that?
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Well, let the craziness continue. I went to take a picture and it was right side up again. I will let it sit for some time and hope to catch a picture of what is happening.....
OS version is 3.2.3.1233
Boot 1 - 3.0.0.99
Boot 2 - 3.1.0.16
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Very strange, judging those versions I don't think it's a prototype.
If you slightly tap your device, does that do anything? (Just seeing if it could be a hardware problem with a jumper or similar)
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It happened again and I have pictures but it is not letting me post a picture when I hit the "picture" icon. Suggestions?
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It must be a hardware problem. I did tap it on the back and hit the reset button and now it is facing correctly.
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Post it as an attachment or go to http://img.ourl.ca/ (http://img.ourl.ca/) and paste the url inside [img][/img] tags
Also, don't 'double post', or post two posts in a row. use the modify button to the top right of the post.
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Attached
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Wow, that really is odd. Have you tried reinstalling the os?
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That wouldn't help, the issue is also when starting up. It might be a jumper (a little resistor for example) that is loose or bad that sets the rotation of the display. That is of course just speculation though, but I can't see how it could be a software problem.
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That's so cool that it would have been impossible to do :D
The fact that even the boot screen is reversed shows that it's not a software issue but, as jim said above, more like an hardware one if "tap-ing" (that is an hardware/physical change) is the only factor that creates this behavior.
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That is really strange. I only ever saw this happen on certain TI-84+ models before when people ran bad ASM programs or triggered certain OS bugs.
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DJ_O that implied bad z-adress, rhight?
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The coolness level of this glitch is exceeding 9000 as we observe and ask questions. I can only think that I'd be a little overwhlemed if in his position, knowing practically nothing about what you guys are talking about and just wanting help xD
Z address?/me wants to know what that is
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IMO it's some adress pointed directly in the display driver. For instancr there is a z-a that shift the displayed VRAM up/bottom without editing any pixel.
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I looked at the documentation of the primecell LCD controller, and there isn't a bit that does that in the display driver. It must be flipped in the screen buffer, or something odd is happening.
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I know this is a very old post but I had this happen to my CAS calc and fixed it so thought I may as well chip in.
Tried everything mentioned in the thread, took the battery out for >10mins, formatted and updated to latest OS, and gave it a few good hits in case there were any loose connections.
None of these worked so I took it apart. Noticed there was a small speck of oxidization or something on the connection from the screen to the main board. got rid of the speck and now everything is back to normal, no more flipped screen.
Not sure if there was a connection between the two but worth checking out if you're having this issue.
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Pretty cool that you were able to get yours fixed. Thanks for sharing. :)
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Did you happen to take a picture or remember which trace it was on? I'm not how useful that information would bee, but it might be interesting.