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I got a couple more reports: the Samsung APST issues appears to affect multiple 950-series devices in Dell XPS 15 9550 and Precision 5510 laptops. Change the quirk: rather than blacklisting the firmware on the first problematic SSD that was reported, disable APST on all 144d:a802 devices if they're installed in the two affected Dell models. While we're at it, disable only the deepest sleep state instead of all of them -- the reporters say that this is sufficient to fix the problem. (I have a device that appears to be entirely identical to one of the affected devices, but I have a different Dell laptop, so it's not the case that all Samsung devices with firmware BXW75D0Q are broken under all circumstances.) Samsung engineers have an affected system, and hopefully they'll give us a better workaround some time soon. In the mean time, this should minimize regressions. See https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678184 Cc: Kai-Heng Feng <kai.heng.feng@canonical.com> Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Jens Axboe <axboe@fb.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.