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Does the gumstix touchscreen work with recent linaro builds of ubuntu? Presently, I've used linaro to make an sdcard with a build of Ubuntu 11.10 for the gumstix overo. My build commands and the resulting behavior are below:
The system boot correctly using the desktop image but the ADS7846 Touchscreen remains a solid white. Shutting down lightdm doesn't seem to have any effect.
The alip image boots and shows two scrambled penguins on the screen briefly. Afterwards colored noise appears along the top of the screen, XFCE appears to be operating at the wrong resolution. This bug report seems to indicate that there may be a kernel bug at work. However, I'd like to find out if others have encountered these problems and if workarounds exist. Here is a screen photo of the blurry penguin:
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Hi, I forwarded your question to the Gumstix folks. I hope they will have useful information to share with you. Stay tuned on Ask Linaro. Michael. |
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The images work for me but it was necessary to manually set the 'defaultdisplay' variable on boot. On boot during the u-boot count down, interrupt and type 'setenv defaultdisplay lcd43<enter>' at the prompt. If you want to make this change for subsequent boots, type 'saveenv<enter>', otherwise, just go ahead and type 'boot<enter>' to boot the system. P.S. Thanks Michael for letting me know about the question. Turns out I didn't have my notifications correct set.
(13 Feb, 19:23)
ashcharles
Thanks for your feedback. I tried this with lcd35 but had no luck. I'll see if my 43 screen works. Can you tell me the linaro binary image version you used?
(14 Feb, 01:31)
speciousfool
What are the kernel boot errors for a lcd35? Tested with 20120113 alip and 20120125 desktop.
(14 Feb, 01:48)
ashcharles
I can confirm that the lcd43 works as expected with linaro-o-alip-tar-20120123-1.tar.gz and hwpack_linaro-overo_20120123-1_armel_supported.tar.gz. I am going to try to with a brand new lcd35 now to check that case.
(16 Feb, 05:56)
speciousfool
Alright, I can now confirm this bug only exists with the lcd35. I tried it with several different boards and lcds, one set entirely brand new.
(16 Feb, 06:38)
speciousfool
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