Date: Wed, 28 Jan 2015 00:46:00 -0800 From: Adrian Chadd <adrian@freebsd.org> To: Andrew Wilcox <AWilcox@wilcox-tech.com> Cc: "Ranjan1018 ." <214748mv@gmail.com>, freebsd-current <freebsd-current@freebsd.org> Subject: Re: drm2 regression: backlight adjustment on ivybridge no longer works Message-ID: <CAJ-Vmokph=BHH895uHxQh=dHPfb5_ik4MZrq8sOGrd0AtPzymQ@mail.gmail.com> In-Reply-To: <009501d03acb$4f380d70$eda82850$@Wilcox-Tech.com> References: <CAJ-VmomfBrBN6HVBq5FoRf1nRqvrhiDOw6RHjfs13j-9cqi1vg@mail.gmail.com> <CACyC=qYMT3VFx4GxypJ6F61pKSaxE0JKBK%2BudDMPSh4_ASAi6w@mail.gmail.com> <000e01d039fb$d5959930$80c0cb90$@Wilcox-Tech.com> <CACyC=qZeG8L%2BbZu=RacU_rdNVTFhyCFH2A%2BdNw71%2B09cZ20VgA@mail.gmail.com> <009501d03acb$4f380d70$eda82850$@Wilcox-Tech.com>
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Hi! Good catch! But nope, didn't fix it. -adrian On 27 January 2015 at 23:23, Andrew Wilcox <AWilcox@wilcox-tech.com> wrote: > Ranjan1018 . sent: 27 January 2015 23:42: >> The regression was introduced in r277487. > > Looking closer at this revision, I believe I may see the issue. Most of = the new tunables introduced in dev/drm2/i915/i915_drv.c are uninitialised a= nd thus probably contain junk. It likely works for me because the firmware= of my laptop 0s memory on EFI boot. > > I have uploaded a diff here that I believe may fix this. Please test and= let me know: > > http://foxkit.us/FreeBSD/i915-uninitialised-var-fix.diff > > Best, > Andrew > > -- > Andrew Wilcox, C/C++/Python developer, kernel hacker > Blog: http://blog.foxkit.us/ WWW: http://foxkit.us/ > GitHub: https://github.com/awilfox > > > > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org= "
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