From db6778db7eb1d974e1ae0da326530f09c13585ac Mon Sep 17 00:00:00 2001 From: Antonino Daplas Date: Mon, 8 Aug 2005 14:22:43 +0800 Subject: [PATCH] nvidiafb: Fix initial display corruption on certain laptops Reported by:Vincent Fortier (Bugzilla Bug 4768) "At boot time the screen appears moved to the mid right portion of the actual video pannel making the end of the line appears at the left edge... It simply looks like moved half way to the right" His particular hardware has a display with an unusual dimension (1920x1200) but unfortunately has no EDID block. None of the entries in the global mode database is correct for this particular display, and it particularly has difficulty scaling up 640x480 (the default startup mode of nvidiafb) to 1920x1200 which causes the above described problem. 1, Add 1920x1200 to the global mode database. 2. Let nvidiafb base the startup mode from the flatpanel dimensions only if the EDID block is absent, no boot mode parameter is specified by the user, and a flatpanel/LCD display is attached. Signed-off-by: Antonino Daplas Signed-off-by: Linus Torvalds --- drivers/video/modedb.c | 5 +++++ drivers/video/nvidia/nvidia.c | 7 +++++++ 2 files changed, 12 insertions(+) diff --git a/drivers/video/modedb.c b/drivers/video/modedb.c index fbf659b6dab0..3edc9f49344b 100644 --- a/drivers/video/modedb.c +++ b/drivers/video/modedb.c @@ -246,6 +246,11 @@ static const struct fb_videomode modedb[] = { /* 480x300 @ 72 Hz, 48.0 kHz hsync */ NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3, 0, FB_VMODE_DOUBLE + }, { + /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */ + NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED }, }; diff --git a/drivers/video/nvidia/nvidia.c b/drivers/video/nvidia/nvidia.c index b2e6b2407869..52b16850a54e 100644 --- a/drivers/video/nvidia/nvidia.c +++ b/drivers/video/nvidia/nvidia.c @@ -1324,6 +1324,13 @@ static int __devinit nvidia_set_fbinfo(struct fb_info *info) fb_videomode_to_var(&nvidiafb_default_var, &modedb); nvidiafb_default_var.bits_per_pixel = 8; + } else if (par->fpWidth && par->fpHeight) { + char buf[16]; + + memset(buf, 0, 16); + snprintf(buf, 15, "%dx%d", par->fpWidth, par->fpHeight); + fb_find_mode(&nvidiafb_default_var, info, buf, specs->modedb, + specs->modedb_len, &modedb, 8); } if (mode_option) -- cgit v1.2.3