On 11/28/2012 05:39 AM, Stephen Warren wrote: > On 11/27/2012 11:17 AM, Stephen Warren wrote: >> On 11/26/2012 08:16 PM, Mark Zhang wrote: >>> On 11/27/2012 06:37 AM, Stephen Warren wrote: >>>> On 11/22/2012 12:37 PM, Thierry Reding wrote: >>>>> Instead of using the stride derived from the display mode, use the pitch >>>>> associated with the currently active framebuffer. This fixes a bug where >>>>> the LCD display content would be skewed when enabling HDMI with a video >>>>> mode different from that of the LCD. >>>> >>>> This patch certainly doesn't cause any additional issues for me, so: >>>> >>>> Tested-by: Stephen Warren <swarren@xxxxxxxxxx> >>>> >>>> Howwever, it still doesn't allow both Cardhu's LCD panel and external >>>> HDMI port (1080p) to be active at once. If I boot with both enabled, or >>>> boot with just the LCD enabled and hot-plug HDMI, as soon as both heads >>>> are active, then some kind of display corruption starts; it looks like a >>>> clocking issue or perhaps memory underflow. >>> >>> I haven't observed this issue. What kind of display corruption you mean? >>> Did it recover after some seconds or the display in LVDS panel was >>> always corrupted? >>> >>> During my testing, I connected HDMI while booting cardhu and I can see >>> the LVDS and HDMI working with no corruptions. >> >> For your viewing pleasure (and playing with my new phone) :-) >> http://www.youtube.com/watch?v=ZJxJnONz7DA >> >> The external monitor is 1920x1200 I believe. > > Jon Mayo says the corruption in the video is display (memory fetch) > underflow. Perhaps this is because (IIRC) the BCT I'm using on Cardhu > programs the memory controller at a slow rate, and the bootloader and/or > kernel is supposed to bump up the rate to the max, but that's not > implemented anywhere yet upstream. If you're testing with "fastboot" > instead of U-Boot, that might be re-programming the memory frequencies, > and hence avoiding this. > All right, I just test the framebuffer console and "xinit", I didn't install the whole ubuntu. I'll install the ubuntu in my cardhu and see whether I have this kind of issues. Mark > I guess we have a fun time ahead of us with mode validation and memory > controller programming. > -- > To unsubscribe from this list: send the line "unsubscribe linux-tegra" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
