On Mon, May 19, 2008 at 6:48 PM, Woodruff, Richard <r-woodruff2@xxxxxx> wrote: > You are just talking about your logo disappearing (usually tux)? No not just tux. If i run tslib (ts_test) and suspend& resume the board then also the same behavior is happening. ie. The normal ts_test screen disappears and blue screen comes. Also if i do a cat of some image to /dev/fb0 then the same image disappears after a suspend&resume cycle, whether this behavior also linked to console layer? Or a higher level mechanism (like X server) is required to save and restore the framebuffer after a PM cycle or it's the fb driver's responsibility to do so? Regards, Arun C > > It has been this way for years if not forever on all Linux systems. > > A long while back in 2.4 this bothered me enough that I did fix it in a MV kernel. This is in effect of the console layer not saving its logo settings. It is not all that hard to fix. > > For a development system having the logo is kind of a nice thing even an advertising tool. However, probably no one ships a system with it on. > > You might send a patch in to console people to fix it. When I sent a patch to MV long back it was discarded. I didn't send it to the proper maintainer which could have stuck then. > > Regards, > Richard W. > >> -----Original Message----- >> From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap- >> owner@xxxxxxxxxxxxxxx] On Behalf Of arun c >> Sent: Monday, May 19, 2008 1:49 AM >> To: linux-omap@xxxxxxxxxxxxxxx >> Subject: Power management behavior of linux-2.6.14-omap2-v5 >> >> Hi all, >> >> I am using linux-2.6.14-omap2-v5 to test PM on 2430SDP. >> >> I did >> >> a) cat myimg > /dev/fb0 >> I can see "myimg" displayed on the lcd >> >> b) cat /dev/fb0 > myimg_before_sleep >> >> c) echo "mem" > /sys/power/state >> Board goes to sleep state. >> >> d) After a key press the board awakes and lcd >> becomes blue "myimg" is disappeared from >> the screen. >> >> e) cat /dev/fb0 > myimg_after_wakeup >> >> The two binary files "myimg_before_sleep" and >> "myimg_after_wakeup" differs each other. >> >> Can somebody explain me why such a behavior? >> Why the lcd fails to display the same image >> before and after sleeping? >> >> Regards, >> Arun C >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-omap" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
