Just a quick write-up on a conversion I performed recently on Quanta ZB1 board from an Acer Aspire 5672WLMi (Aspire 5670 series).
Ati Mobility Radeon X1400 dGPU died while installing Linux, it froze and then after rebooting I had a white screen with some lines. External display on VGA was mostly working but with some vertical bars on some screens.
So went on to convert to iGPU. Main point is that the MCH is a 945PM, so without integrated GPU. It must be replaced with a 945GM GMCH.
After replacement, dGPU will still be used by default so you can confirm the machine still POSTs.
You need to populate the BOM option IV@ in the schematics: RP51, RP60, R469-R471, R160, R468, R472, R473, R180, R181, R185, R186.
When there is an alternative between IV@ and EV@, you need to populate IV@ and depopulate EV@: R_PCLK_SIO, TV_Y/G, TV_C/R, TV_COMP, VGA_RED, VGA_GRN, VGA_BLU, VSYNC, HSYNC, CRTDCLK, CRTDDAT, PU16 #1/2, LVDS_BLON, LVDS_DIGON, TXUCLKOUT, TXUOUT2, TXUOUT1, TXUOUT0, TXLOUT0, TXLOUT1, TXLOUT2, TXLCLKOUT.
Finally, Q32 and Q33 must be removed for proper detection of the internal panel.
Having a donor board with a 945GM will help for the odd-valued resistors.
Note that DVI will not work since there's no direct connection between the DVI port and the GMCH, it goes through a CH7307C display controller which is not populated. You could probably populate that circuit if you really needed DVI but I left it out.
Ati Mobility Radeon X1400 dGPU died while installing Linux, it froze and then after rebooting I had a white screen with some lines. External display on VGA was mostly working but with some vertical bars on some screens.
So went on to convert to iGPU. Main point is that the MCH is a 945PM, so without integrated GPU. It must be replaced with a 945GM GMCH.
After replacement, dGPU will still be used by default so you can confirm the machine still POSTs.
You need to populate the BOM option IV@ in the schematics: RP51, RP60, R469-R471, R160, R468, R472, R473, R180, R181, R185, R186.
When there is an alternative between IV@ and EV@, you need to populate IV@ and depopulate EV@: R_PCLK_SIO, TV_Y/G, TV_C/R, TV_COMP, VGA_RED, VGA_GRN, VGA_BLU, VSYNC, HSYNC, CRTDCLK, CRTDDAT, PU16 #1/2, LVDS_BLON, LVDS_DIGON, TXUCLKOUT, TXUOUT2, TXUOUT1, TXUOUT0, TXLOUT0, TXLOUT1, TXLOUT2, TXLCLKOUT.
Finally, Q32 and Q33 must be removed for proper detection of the internal panel.
Having a donor board with a 945GM will help for the odd-valued resistors.
Note that DVI will not work since there's no direct connection between the DVI port and the GMCH, it goes through a CH7307C display controller which is not populated. You could probably populate that circuit if you really needed DVI but I left it out.
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