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Date: Thu, 17 May 2012 16:20:31 +1000 From: Ben Skeggs <skeggsb@...il.com> To: bskeggs@...hat.com Cc: Tim Gardner <tim.gardner@...onical.com>, Seth Forshee <seth.forshee@...onical.com>, linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org Subject: Re: 3.4-rc7 backlight regression on Dell XPS M1710 On Thu, May 17, 2012 at 10:30 AM, Ben Skeggs <bskeggs@...hat.com> wrote: > Am Mittwoch, den 16.05.2012, 12:17 -0600 schrieb Tim Gardner: >> commit b99da31ed8521eb78d5d6930f3128f8ecdb75fae causes the backlight in >> my Dell XPS M1710 to stop working. Symptoms are dim display and won't >> respond to key brightness events. I bisected and confirmed that >> reverting this single patch on top of 3.4-rc7 fixes the problem. > That commit is correct, it may have uncovered a bug elsewhere though. It's been pointed out I should probably be a bit more verbose about what I'm after here... Apologies :) The commit that causes the original regression is a0b25635515ef5049f93b032a1e37f18b16e0f6f. Did your backlight work correctly before this? Thanks, Ben. > > Cheers, > Ben. > >> >> 01:00.0 VGA compatible controller [0300]: nVidia Corporation G71 >> [GeForce Go 7900 GS] [10de:0298] (rev a1) >> Subsystem: Dell Device [1028:019b] >> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- >> Stepping- SERR- FastB2B- DisINTx- >> Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- >> <MAbort- >SERR- <PERR- INTx- >> Latency: 0, Cache Line Size: 64 bytes >> Interrupt: pin A routed to IRQ 16 >> Region 0: Memory at ed000000 (32-bit, non-prefetchable) [size=16M] >> Region 1: Memory at d0000000 (64-bit, prefetchable) [size=256M] >> Region 3: Memory at ee000000 (64-bit, non-prefetchable) [size=16M] >> Region 5: I/O ports at ef00 [size=128] >> Expansion ROM at efe00000 [disabled] [size=128K] >> Capabilities: <access denied> >> Kernel driver in use: nouveau >> Kernel modules: nouveau, nvidiafb >> >> rtg > > > _______________________________________________ > dri-devel mailing list > dri-devel@...ts.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/dri-devel -- 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/
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