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
| ||
|
Date: Tue, 19 Jul 2016 06:51:17 +0200 From: Michal Feix <michal@...x.cz> To: Pavel Machek <pavel@....cz> Cc: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>, One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>, linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org, dri-devel@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org Subject: Re: Kernel stability on baytrail machines Dne 13.7.2016 v 12:48 Pavel Machek napsal(a) >>>> Are there any updates on the status of this issue? >>>> >>>> The current bugzilla report [1] marks this as a power management >>>> issue. However, many reports indicate that it would only freeze >>>> when running X, so it's not completely clear if it's related to >>>> the gfx driver too. >>> Does >>> >>> "intel_idle.max_cstate=1" >>> >>> fix it for you? >> Yes, it does. >>> If you feel it is X-only problem, you may want to provide details >>> about your graphics subsystem (DRM enabled? framebuffer only?) and >>> probably cc. >> It's not X-only problem. Happens even in console mode, which is KMS >> switched during boot though. >>> ...actually... you may want to verify if it happens in unaccelerated X. >> As it happens even in console mode, is this relevant test? > No, no need to test with X. > > Would it be possible to test in good old VGA mode? For past few days I updated to 4.6.3 kernel and tested with X and without X, in console mode and no KMS. My machine is way more stable than with previous 4.5.* and 4.4.* kernels I tried. With 4.6.3 kernel and X running, I had only one freeze during Firefox session with video playback. For the rest of two days of testing, no hang. I was not able to hang the machine during another 2 days of testing with 4.6.3 kernel and console mode with KMS disabled. It's fair to say, that stress testing of GFX is quite limited when running in console mode :-). I tried hard with mplayer with libcaca and with repeated kernel compilation task. No hang occured. My conclussion is that 4.6.3 is surelly a huge improvement, compared to 4.5 and 4.4. kernels regarding Bay trail stability issue. Michal Feix
Powered by blists - more mailing lists