Hi, the black screen may be related to leftover fbdev xorg.d config file - linux-next plus drm patchset is needed for eDP-LVDS bridge or u-boot with simplefb. Having both results in black screen.
Regards, Andreas P.S. Sorry for top-posting. Guillaume Gardet <[email protected]> schrieb: >Le 02/12/2014 13:57, Guillaume Gardet a écrit : >> Le 02/12/2014 00:34, Alexander Graf a écrit : >>> >>> On 02.12.14 00:19, Misha Komarovsky wrote: >>>> Hello, >>>> I found that kernel or dtb file in current Chromebook contrib factory >>>> image, tested on version 245, have boot problems. After kernel start >>>> no signs of activity on stdout or serial console. >>>> >>>> If i replace linux.vmx and dtb on lxboot partition and modules on >>>> lxroot with same files from 12.3 dist image for chromebook im able to >>>> boot and pass installation fine. >>>> >>>> Also after installation and reboot, sd card not bootable at all, first >>>> partition on sdcard changed type code to 0700 and size to 32mb, >>>> probably cgpt script failed to fix it after installation for some >>>> reason. >>>> >>>> Bundled armsoc x11 driver fail to start because it is for abi 13 not abi >>>> 18. > >I updated armsoc driver just now from 0.0.1 to 1.1.0. It may help. :) > >>> That does indeed sound pretty broken. I think someone needs to sit down >>> and check which of all those components is already done well enough >>> upstream to drop our hacks. >>> >>> For example, I think u-boot has upstream snow support now, so we could >>> just use that. The kernel should be ok as well. >> >> Current Factory u-boot-snow (2015.01-rc2) does boot but is not really >> usable. It seems there is a problem to access SD card. But LCD and keyboard >> are working fine. :) >> >> I will have a look at it. > >With some patches, I am able to use a USB stick (no external SD) with upstream >u-boot-snow and Factory kernel-lpae does boot ! >On kernel start, you must wait a little bit because at the beginning, there is >just a black screen, followed later by a normal screen and a blue YaST >Firstboot screen. :) > >But the are some problems: >* upstream u-boot does not handle external SD card for an unknown reason >(internal eMMC is usable). Downstream u-boot has no bootz support. >* keyboard does not work under Linux (you must use an USB keyboard). >* Second boot is deeply broken. U-Boot is not launched at all because "cgpt" >command is applied to /dev/mmcblk0 (internal eMMC) instead of /dev/sda (USB >stick) (Kiwi bug?). Once this one manually fixed, u-boot load the kernel and >then hang with a black screen. Probably due to missing modules in dracut >initrd. (I will submit a JeOS update once tested) >* No wifi (at least on 1st boot) > >I will send an update (and SR) once tests are passed. > > >Guillaume > >-- >To unsubscribe, e-mail: [email protected] >To contact the owner, e-mail: [email protected] >
