On 09/24/2010 10:07 AM, Randy Dunlap wrote: > On Thu, 23 Sep 2010 18:31:32 +0200 Uwe Bonnes wrote: > > [just adding cc's] > > >>>>>>> "Randy" == Randy Dunlap <rdunlap@xxxxxxxxxxxx> writes: >>>>>>> >> Randy> Is CONFIG_DRM_KMS_HELPER enabled in your kernel .config file? If >> Randy> not, we need to find out how to enable it (there is no kconfig >> Randy> prompt for it). >> >> Yes, it is enabled >> >> Randy> Can you check if Alt-Sysrq-H (help) lists V for "force-fb(V)"? >> Yes, it is listed. >> >> And yes, my last experiments where with ALT-CTL-sysreq, so doomed for non >> function due to operator error. >> >> However: >> When running X, X.Org X Server 1.9.0 on Thinkpad R50 RV250, Alt-Sysrq-v >> switches to an all-black display. By console switching with ALT-CLT-F1 I >> get back to the booting console and ALT-CLT-F7 brings me back to X. Running >> on the console and calling Alt-Sysrq-v prints >> SysRq : Restore framebuffer console >> >> Is there some omission by the distribution or my setup that Alt-Sysrq-v when >> running X results in an all-black screen? >> >> And when I hit the hibernate problem, the screen stays black even with a >> console switch after Alt-Sysrq-v >> >> I am not exactly sure what you are looking for but alt-sysrq-v might not tell you a whole lot because an escape back to the text console that was not actively receiving printk's or crash data is going to in general provide you with a black screen. If you were interested in something a bit more invasive such as a collecting a process listing or examining the dmesg output you might consider jumping into kdb. echo kbd > /sys/module/kgdboc/parameters/kgdboc Then you would do the "alt-sysrq v" followed by "alt-sysrq g". From there you could then run dmesg, and your screen would no longer be blank in theory. :-) We do have some patches for the RV250 for atomic kernel mode setting plus kdb support but they are not merged to the mainline kernels as of yet. Jason. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
