From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jerone Young Subject: Re: [PATCH v2] ACPI: DMI init_set_sci_en_on_resume for multiple Lenovo ThinkPads Date: Fri, 23 Apr 2010 16:41:06 -0500 Message-ID: <1272058866.1594.7.camel@laptop> References: <20100423162015.GA27760@canonical.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from adelie.canonical.com ([91.189.90.139]:55705 "EHLO adelie.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752615Ab0DWVlM (ORCPT ); Fri, 23 Apr 2010 17:41:12 -0400 In-Reply-To: <20100423162015.GA27760@canonical.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Alex Chiang Cc: lenb@kernel.org, colin.king@canonical.com, linux-acpi@vger.kernel.org, linux-kernel , stable@kernel.org You made a small mistake..point out below. **mumble** .. still not a fan of quirk tables when a bios coming out to resolve this issue is coming out..one out for T410 came out yesterday. On Fri, 2010-04-23 at 10:20 -0600, Alex Chiang wrote: > Multiple Lenovo ThinkPad models with Intel Core i5/i7 CPUs can > successfully suspend/resume once, and then hang on the second s/r > cycle. > > We got confirmation that this was due to a BIOS defect. The BIOS > did not properly set SCI_EN coming out of S3. The BIOS guys > hinted that The Other Leading OS ignores the fact that hardware > owns the bit and sets it manually. > > In any case, an existing DMI table exists for machines where this > defect is a known problem. Lenovo promise to fix their BIOS, but > for folks who either won't or can't upgrade their BIOS, allow > Linux to workaround the issue. > > Confirmed by numerous testers in the launchpad bug that using > acpi_sleep=sci_force_enable fixes the issue. We add the machines > to acpisleep_dmi_table[] to automatically enable this workaround. > > https://bugzilla.kernel.org/show_bug.cgi?id=15407 > BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/532374 > > Cc: stable@kernel.org > Signed-off-by: Alex Chiang > --- > We want to get this patch upstream so that we can get it into > -stable. Matthew Garrett's patch titled "Fall back to manually > changing SCI_EN" is the plan for dealing with future platforms > that will likely have this same BIOS bug. > > v1 -> v2: > - remove separate X201s entry, as the X201 entry will match it too > --- > sleep.c | 32 ++++++++++++++++++++++++++++++++ > 1 file changed, 32 insertions(+) > --- > diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c > index f74834a..317794f 100644 > --- a/drivers/acpi/sleep.c > +++ b/drivers/acpi/sleep.c > @@ -450,6 +450,38 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = { > }, > }, > { > + .callback = init_set_sci_en_on_resume, > + .ident = "Lenovo ThinkPad T410", > + .matches = { > + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), > + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T410"), > + }, > + }, > + { > + .callback = init_set_sci_en_on_resume, > + .ident = "Lenovo ThinkPad T510", > + .matches = { > + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), > + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T510"), > + }, > + }, > + { > + .callback = init_set_sci_en_on_resume, > + .ident = "Lenovo ThinkPad W510", > + .matches = { > + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), > + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad W510"), > + }, > + }, > + { > + .callback = init_set_sci_en_on_resume, > + .ident = "Lenovo ThinkPad X201[s]", > + .matches = { > + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), > + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201"), The X201s identifies it's self as an X201s .. So you would need two separate entries. Here is dmidecode data from a X201s: http://launchpadlibrarian.net/45050202/dmidecode > + }, > + }, > + { > .callback = init_old_suspend_ordering, > .ident = "Panasonic CF51-2L", > .matches = { > -- > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html