Pavel, I've chased one of the 'Suspend to RAM' resume problems to a specific line in drivers/char/vt.c, see attached 2.6.21-rc3 diff with TRACE_RESUME() instrumentation. The macro scr_writew resolves to '*addr = val', which appears to be causing the problem. I've verified that the pointer is not NULL, but don't know if its really valid. Its pretty tough to tell what is happening, but on a Dell XPS it just hangs. A Dell Precision blinks the keyboard lights.
Since I don't know anything about video programming, I though perhaps you might have an opinion. rtg -- Tim Gardner [EMAIL PROTECTED]
diff --git a/drivers/char/vt.c b/drivers/char/vt.c index c3f8e38..43a0904 100644 --- a/drivers/char/vt.c +++ b/drivers/char/vt.c @@ -98,6 +98,7 @@ #include <linux/pm.h> #include <linux/font.h> #include <linux/bitops.h> +#include <linux/resume-trace.h> #include <asm/io.h> #include <asm/system.h> @@ -2263,7 +2264,9 @@ static void vt_console_print(struct console *co, const char *b, unsigned count) if (c == 10 || c == 13) continue; } +TRACE_RESUME(0); scr_writew((vc->vc_attr << 8) + c, (unsigned short *)vc->vc_pos); +TRACE_RESUME(0); cnt++; if (myx == vc->vc_cols - 1) { vc->vc_need_wrap = 1;