linux-kernel - Re: [FIRMWARE BUG] Lenovo x120e

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20121128151247.GA14635@liondog.tnic>
Date:	Wed, 28 Nov 2012 16:12:47 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Denis Lotarev <dlotarev@...oo.com>
Cc:	linux-kernel@...r.kernel.org, Zhang Rui <rui.zhang@...el.com>,
	Len Brown <len.brown@...el.com>
Subject: Re: [FIRMWARE BUG] Lenovo x120e

On Wed, Nov 28, 2012 at 05:27:45AM -0800, Denis Lotarev wrote:
> Im using kernel (Linux initbox 3.6.7-1-ARCH #1 SMP PREEMPT Sun Nov 18 10:11:22 CET 2012 x86_64 GNU/Linux) and i see some problems at booting... So dmesg output with BUG lines:
> 
> $ dmesg |grep Bug
> [    1.363154] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored
> [    1.373784] [Firmware Bug]: ACPI: No _BQC method, cannot determine initial brightness
> [    1.380827] [Firmware Bug]: ACPI: No _BQC method, cannot determine initial brightness
> [    1.433354] pnp 00:09: [Firmware Bug]: [mem 0x00000000-0xffffffffffffffff disabled] covers only part of AMD MMCONFIG area [mem 0xf8000000-0xf9ffffff]; adding more reservations
> [    3.349658] [Firmware Bug]: ACPI: No _BQC method, cannot determine initial brightness

Nothing to worry about, just ACPI in BIOS is not implementing _BQC
method with which you can query the initial brightness level of the
display device. Frankly, I'm not getting any smarter from the commit
message as to what it even got added for:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=98758faffc86ee6fe9504eeab75481ee7c1aa860

"kinda firmware bug"?? :-)

Maybe Zhang/Len can shed more light on the matter.

Thanks.

-- 
Regards/Gruss,
    Boris.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/