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ClockworkMod (CWM) Recovery easy install for RK3066 and RK3188 -- TWRP/CWM Flash-Tool and root for RK3288

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CUBE U9GT5 (CUBE U9GTV)
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galgofa
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2013/09/14 - 10:43
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Dear Friends, 

 

May i ask you to add support for kernel for CUBE U9GT5 (CUBE U9GTV) tab which is same h/w as Window N90 FHD, VISTURE V4, Chuwi V99 and has retina screen.

 

Thank you very much.

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JochenKauz

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2013/09/17 - 00:34
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first step to get such a kernel would be to provide a dmesg and detailed specs of the tablet, then we could look at this and could try to find a config for it.

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galgofa
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2013/09/19 - 18:31
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user_m
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2013/11/22 - 16:40
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kernel for MYTAB U9GTV


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JochenKauz

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2013/11/24 - 01:07
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You could always try our CM10.1 build. Only thing to change is the kernel.

 

To get a custom kernel running is a little bit more complicated. I will look at the dmesg above,.

But keep in mind, our CM10.1 does not need a custom kernel, it should run with every 3.0.8 stock kernel.

Problems are always, the touch and the sensors, but we could try to fix it. Yous should have a StockRFom for flashing back before you try this.

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vm03
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2013/12/15 - 17:23
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Hi All!

I try to build kernel for U9GTV from https://github.com/crewrktablets/rk30_kernel
with rk30_hd1_defconfig.

Kernel build successful. And boot successful.

But... display not working... I can connect via adb.

In config has CONFIG_LCD_LP097QX1=y
And this tablet have it display.
In stock kernel i see in dmesg: "switch to high defination mode". But i not find this message in kernel source.
As i understand in stock kernel used modified display driver.
I don `t know what to do next, what would make the display work. :(
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2013/12/15 - 23:53
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Hmm... thats complicated.

Only to know the the real name of the display does not mean that the driver is working for it.

 

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vm03
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2014/01/09 - 16:04
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IMG_20140108_15453.jpgImage EnlargerSome progress. Many work good. But right on the screen white stripe for 10 percent of the screen (see atach).

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JochenKauz

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2014/01/09 - 16:16
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Looks interesting, I think that one of the parameters of the screen drivers is wrong.

Could you please upload the driver file, so I can look at the content?

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vm03
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2014/01/09 - 19:33
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Screen driver: https://github.com/crewrktablets/rk30_kernel/blob/master/drivers/video/display/screen/lcd_LP097QX1.c

I don't change it.

 

I can upload my diff's. But, I basically changed config, Kconfig's and Makefile's.

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2014/01/09 - 20:40
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Would be nice to see your other changes..

 

Okay... I have looked at the driver and perhaps I have found your problem..

Look at the Line with:

#define H_FP 150

 

This is the right margin of your display, perhaps you can change it to higher or lower value and it helps.

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vm03
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2014/01/10 - 09:42
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My diff patch in atach.

I tried to change H_FP. Increase does not affect. Reduced to 30 also does not affect. From 30 to 25 ripple on the right, but much less than the entire stripe. Less than 25 screen works quite wrong.

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JochenKauz

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2014/01/11 - 00:38
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hmm.. not easy I think.

what happens if you change the left offset of the screen (h_PB)?

I think this is a trial and error situation. There are a few parameters to play with..

screen->left_margin = H_BP;
screen->right_margin = H_FP;
screen->hsync_len = H_PW;
screen->upper_margin = V_BP;
screen->lower_margin = V_FP;
screen->vsync_len = V_PW;

 

I'm sorry that I can give no better advice, you are the only one who could play with this defines.

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vm03
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2014/01/11 - 11:02
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Changes to these settings do not affect the stripe. They can lead to partial or full not working of screen, but does not affect the stripe. I think the problem might be on rk_fb ор lcdc because of high resolution...

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vm03
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2014/01/11 - 11:06
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I created fork for my work on github. https://github.com/vm03/rk30_hd_308_kernel

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