From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geert Uytterhoeven Date: Thu, 22 Jan 2015 19:44:18 +0000 Subject: Re: fbcon gives mirrored fonts on monochrome display Message-Id: List-Id: References: <54C145B8.6080204@tronnes.org> In-Reply-To: <54C145B8.6080204@tronnes.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: linux-fbdev@vger.kernel.org Hi Noralf, On Thu, Jan 22, 2015 at 7:47 PM, Noralf Tr=C3=B8nnes wr= ote: > I'm playing with a SSD1306 128x64 monochrome display and fbcon gives me > mirrored fonts and some extra lines. > fbdev config: > info->var.bits_per_pixel =3D 1; > info->fix.visual =3D FB_VISUAL_MONO10; > info->var.red.length =3D 1; > info->var.red.offset =3D 0; > info->var.green.length =3D 1; > info->var.green.offset =3D 0; > info->var.blue.length =3D 1; > info->var.blue.offset =3D 0; > Uses: sys_fillrect, sys_copyarea, sys_imageblit (and deferred_io) > > System: Raspberry Pi, ARM, Linux 3.18.3 > > Does anyone see what this might be? What's the value on CONFIG_FB_CFB_REV_PIXELS_IN_BYTE in your .config? Does your driver set FB_NONSTD_REV_PIX_IN_B? Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k= .org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like t= hat. -- Linus Torvalds