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  1. Bug #20195
  2. Comment #1

Comment 1 for bug 20195

Revision history for this message
Antonio Distante (antonio-distante) wrote :

Searching in acpi-devel mailinglist's archive I found this Pavel Machek's patch
that should play a beep on resume:

 --- clean/arch/i386/kernel/acpi/wakeup.S 2005-01-22 21:24:51.000000000 +0100
 +++ linux/arch/i386/kernel/acpi/wakeup.S 2004-12-25 15:51:04.000000000 +0100
 @@ -11,7 +11,22 @@
  #
  # If physical address of wakeup_code is 0x12345, BIOS should call us with
  # cs = 0x1234, eip = 0x05
 -#
 +#
 +
 +#define BEEP \
 + inb $97, %al; \
 + outb %al, $0x80; \
 + movb $3, %al; \
 + outb %al, $97; \
 + outb %al, $0x80; \
 + movb $-74, %al; \
 + outb %al, $67; \
 + outb %al, $0x80; \
 + movb $-119, %al; \
 + outb %al, $66; \
 + outb %al, $0x80; \
 + movb $15, %al; \
 + outb %al, $66;

  ALIGN
   .align 4096
 @@ -20,6 +35,7 @@
   wakeup_code_start = .
   .code16

 + BEEP
    movw $0xb800, %ax
   movw %ax,%fs
   movw $0x0e00 + "L", %fs:(0x10)

I applied it to a 2.6.13-rc5 vanilla kernel and build it without framebuffer
support. I booted the new kernel with "init=/bin/sh" and then tried to S3. On
resume system hangs and I can't hear no beep. I hope this helps.