From: Michael Tokarev <mjt@tls.msk.ru> To: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> Cc: Linux-kernel <linux-kernel@vger.kernel.org>, dri-devel@lists.freedesktop.org Subject: Re: screen goes blank when loading gma500_gfx (atom D2500) Date: Fri, 20 Mar 2015 12:34:13 +0300 [thread overview] Message-ID: <550BE995.2010104@msgid.tls.msk.ru> (raw) In-Reply-To: <20150319200521.75a48aa9@lxorguk.ukuu.org.uk> 19.03.2015 23:05, One Thousand Gnomes wrote: >> Yes, with video=LVDS-1:d boot parameter, kernel boots fine and there is >> graphics/video output on the screen, with the following message from kernel >> when loading gma500_gfx: >> >> [ 6.472859] [drm] forcing LVDS-1 connector OFF >> >> (and a few others). >> >> There's one funky thing still -- the screen size is not calculated correctly >> for the text (vga, d-sub) console, last text line is placed at about 3/4 of >> the screen size, with the rest - 1/4 - of the screen being blank. > > I've seen that in one other case, where what was in fact happening was > that forcing the connector "off" was actually effectively leaving it as > the BIOS set it. When I use LVDS-1:d in the kernel command line, that connector is not shown by utilities such as xrandr, at all. There is, however, another connector, named LVDS-0, and are also DVI-0, DVI-1, and DisplayPort-0, DisplayPort-1, while this mobo only have DVI & D-SUB (and LVDS soldered on board too) and no DP. At least as far as I can see. So at least one LVDS connector is shown anyway (LVDS-0, not LVDS-1), and that one is "not connected". Besides, DisplayPort-1 is shown as "connected" by xrandr, with monitor set to 1024x768 mode, -- I think this is why the text VGA size is calculated wrong.. Lemme see... ..nope. Adding video=DisplayPort-1:d to the kernel command line (in addition to video=LVDS-1:d) makes no difference, DisplayPort-1 is still shown by xrandr as connected @1024x768. > What happens if you then use xrandr to change the > display sizes ? X11 works fine as far as I can see. Xrandr works and changes video modes. Once I switch from X back to the text console the text size occupes 3/4 of the screen only, as if the monitor was smaller. I wonder if it will work with more than one monitor... ;) I'll try hopefully today. Thanks, /mjt
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From: Michael Tokarev <mjt@tls.msk.ru> To: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> Cc: Linux-kernel <linux-kernel@vger.kernel.org>, dri-devel@lists.freedesktop.org Subject: Re: screen goes blank when loading gma500_gfx (atom D2500) Date: Fri, 20 Mar 2015 12:34:13 +0300 [thread overview] Message-ID: <550BE995.2010104@msgid.tls.msk.ru> (raw) In-Reply-To: <20150319200521.75a48aa9@lxorguk.ukuu.org.uk> 19.03.2015 23:05, One Thousand Gnomes wrote: >> Yes, with video=LVDS-1:d boot parameter, kernel boots fine and there is >> graphics/video output on the screen, with the following message from kernel >> when loading gma500_gfx: >> >> [ 6.472859] [drm] forcing LVDS-1 connector OFF >> >> (and a few others). >> >> There's one funky thing still -- the screen size is not calculated correctly >> for the text (vga, d-sub) console, last text line is placed at about 3/4 of >> the screen size, with the rest - 1/4 - of the screen being blank. > > I've seen that in one other case, where what was in fact happening was > that forcing the connector "off" was actually effectively leaving it as > the BIOS set it. When I use LVDS-1:d in the kernel command line, that connector is not shown by utilities such as xrandr, at all. There is, however, another connector, named LVDS-0, and are also DVI-0, DVI-1, and DisplayPort-0, DisplayPort-1, while this mobo only have DVI & D-SUB (and LVDS soldered on board too) and no DP. At least as far as I can see. So at least one LVDS connector is shown anyway (LVDS-0, not LVDS-1), and that one is "not connected". Besides, DisplayPort-1 is shown as "connected" by xrandr, with monitor set to 1024x768 mode, -- I think this is why the text VGA size is calculated wrong.. Lemme see... ..nope. Adding video=DisplayPort-1:d to the kernel command line (in addition to video=LVDS-1:d) makes no difference, DisplayPort-1 is still shown by xrandr as connected @1024x768. > What happens if you then use xrandr to change the > display sizes ? X11 works fine as far as I can see. Xrandr works and changes video modes. Once I switch from X back to the text console the text size occupes 3/4 of the screen only, as if the monitor was smaller. I wonder if it will work with more than one monitor... ;) I'll try hopefully today. Thanks, /mjt _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2015-03-20 9:34 UTC|newest] Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-02-08 19:56 screen goes blank when loading gma500_gfx (atom D2500) Michael Tokarev 2014-02-10 10:44 ` One Thousand Gnomes 2014-02-15 18:28 ` Michael Tokarev 2014-04-05 8:15 ` Michael Tokarev 2014-08-05 16:11 ` Michael Tokarev 2014-08-05 16:15 ` Michael Tokarev 2015-03-19 11:09 ` Michael Tokarev 2015-03-19 11:28 ` Michael Tokarev 2015-03-19 11:28 ` Michael Tokarev 2015-03-19 11:56 ` One Thousand Gnomes 2015-03-19 19:48 ` Michael Tokarev 2015-03-19 20:05 ` One Thousand Gnomes 2015-03-20 9:34 ` Michael Tokarev [this message] 2015-03-20 9:34 ` Michael Tokarev 2015-04-02 11:11 ` Michael Tokarev 2015-04-02 11:11 ` Michael Tokarev
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