neil43 Posted December 8, 2011 Share Posted December 8, 2011 EDIT 09-15-2012 - While I had this laptop mostly working... it was a painful process and in the end game it was not nearly the laptop as a MBP (insert model) and I sold if off as a Window 7 machine. Edit - found the solution to the problem that I described below. The fix is described in this thread" http://www.tonymacx8...p?f=170&t=48206 I have wiped Win-7 off the Ultrabook and have it running Lion 10.7.3. Using a USB dongle for WiFi for now. ...end of edit. neil Looking for ideas to resolve black screen upon boot of Lion 10.7.2. This is on a Toshiba Ultrabook Z835 which runs a i3-2367M with 4GB memory and 128GB SSD. The internal display is 13.3 inch with 1366 x 768 which is bright a clear running Win 7 Home Prem. The system has a VGA port and HDMI port (both functional in Win 7 as mirrors or extended desktops). I have an USB external hard disk set up with Lion 10.7.2 to boot to HD3000 (using F12 Key at Power On lets me select the boot to external USB; works well). The system defaults to SATA AHCI mode. The system boots and instead of going to the Desktop, I get a black screen… the system is up and running, just no internal display. I do have keyboard and trackpad working along with Ethernet. Major items not working are internal screen, sound and WiFi. Then if I connect the HDMI port to a HDMI display (or HDMI to DVI adapter to DVI display) the display is good (full acceleration and selectable resolutions). All the while the internal display is black. Or I can boot to the external display and the internal screen is black from the start. Under Lion the VGA port is always non-op (as is to be expected). The 10.7.2 HD3000 kexts are version 7.12. I pulled the 7.14 kexts from my wife's new 13" MBA thinking that they might be a solution; but they did no better then the originals. So I am looking for a plausible solution. neil Link to comment Share on other sites More sharing options...
dzelinski Posted December 28, 2011 Share Posted December 28, 2011 Hi Neil, I'm very interested in getting on Z835. Did you have any further improvement with yours? Thanks Link to comment Share on other sites More sharing options...
neil43 Posted January 3, 2012 Author Share Posted January 3, 2012 No I have made no progress on the major problem where the internal screen is not used. I have been looking for possible solutions but have not found a lead to anything. I have thought about opening the system to see what opportunity there is to change the WiFi card and the SSD. I do see that the SSD has 4 partitions with at least 12GB that could be recovered and put to use in a dual boot set-up. neil Link to comment Share on other sites More sharing options...
neil43 Posted February 13, 2012 Author Share Posted February 13, 2012 I have the solution - see the first post for a pointer to the solution. neil Link to comment Share on other sites More sharing options...
derpuma Posted March 24, 2012 Share Posted March 24, 2012 So you can report that everything works now except WIFI and for that you use a usb dongle? Everythin else is stable? How about Power Management? How is the CPU Fan running? Noisy? BR derpuma Link to comment Share on other sites More sharing options...
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