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Date: Wed, 11 May 2011 18:59:56 +0200 From: Patrik Jakobsson <patrik.r.jakobsson@...il.com> To: Alan Cox <alan@...ux.intel.com> Cc: greg@...ah.com, linux-kernel@...r.kernel.org Subject: Re: [PATCH] gma500: Add option to disable LVDS On Wed, May 11, 2011 at 2:41 PM, Patrik Jakobsson <patrik.r.jakobsson@...il.com> wrote: > On Wed, May 11, 2011 at 10:10:22AM +0100, Alan Cox wrote: >> > pipes and LVDS only finds a bogus mode of 0x0 pixels. Not sure why >> > LVDS takes over instead of SDVO since it has valid modes, but my >> > screen just goes into powersave when no proper PLL can be set for the >> > bogus mode. >> >> Well that is hopeful. If we get a bogus 0x0 pixel mode it means it did >> detect something invalid but for some reason we didn't punt on it. >> >> Alan > Here's the dmesg with drm_debug=7, LVDS is also enabled here. > [ 165.383050] [drm:parse_lfp_panel_data], Found panel mode in BIOS VBT tables: > [ 165.383060] [drm:drm_mode_debug_printmodeline], Modeline 0:"0x0" 0 0 0 0 0 0 0 0 0 0 0x8 0x0 The mode comes from the video bios table. When skipping the bios probe I get a working framebuffer but the backlight code crashes so this needs to be handled. I'll send a patch that throws away that mode and skips backlight if there is no lvds ouput. -Patrik -- 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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