[ 0.000000] WARNING: CPU: 0 PID: 0 at
/home/apw/COD/linux/drivers/iommu/dmar.c:488 warn_invalid_dmar+0x8f/0xa0()
[ 0.000000] Your BIOS is broken; DMAR reported at address 0!
[ 0.000000] BIOS vendor: American Megatrends Inc.; Ver: 1.00.01; Product
Version: Not Applicable
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.13.0-031300rc2-generic
#201311291635
[ 0.000000] Hardware name: Notebook W65_67SZ
/W65_67SZ , BIOS 1.00.01 09/30/2013
[ 0.000000] 00000000000001e8 ffffffff81c01da8 ffffffff81756cb4
0000000000000b48
[ 0.000000] ffffffff81c01df8 ffffffff81c01de8 ffffffff81067b4c
ffffffff81c01e38
[ 0.000000] ffffffff81fdd01c ffffffff81fdd078 0000ffffffff81d3
00000000ffffffff
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffff81756cb4>] dump_stack+0x46/0x58
[ 0.000000] [<ffffffff81067b4c>] warn_slowpath_common+0x8c/0xc0
[ 0.000000] [<ffffffff81067bdf>] warn_slowpath_fmt_taint+0x3f/0x50
[ 0.000000] [<ffffffff81741332>] ? acpi_os_map_memory+0x28/0x156
[ 0.000000] [<ffffffff816235cf>] warn_invalid_dmar+0x8f/0xa0
[ 0.000000] [<ffffffff81d8a0f4>] check_zero_address+0x57/0xf7
[ 0.000000] [<ffffffff81d33120>] ? early_idt_handlers+0x120/0x120
[ 0.000000] [<ffffffff81d8a1ab>] detect_intel_iommu+0x17/0xb8
[ 0.000000] [<ffffffff81d3e20b>] pci_iommu_alloc+0x44/0x6e
[ 0.000000] [<ffffffff81d4dcd3>] mem_init+0x11/0xa2
[ 0.000000] [<ffffffff81d33120>] ? early_idt_handlers+0x120/0x120
[ 0.000000] [<ffffffff81d33d6e>] start_kernel+0x16d/0x3a5
[ 0.000000] [<ffffffff81d33a93>] ? repair_env_string+0x5a/0x5a
[ 0.000000] [<ffffffff81744dfb>] ? memblock_reserve+0x46/0x4b
[ 0.000000] [<ffffffff81d335e8>] x86_64_start_reservations+0x2a/0x2c
[ 0.000000] [<ffffffff81d33729>] x86_64_start_kernel+0x13f/0x14e
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https://bugs.launchpad.net/bugs/1264096
Title:
[W65_67SZ, Intel Haswell HDMI, Digital Out, HDMI] No sound at all
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