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[Bug 1541247] [NEW] Zooms image on TV horizontally so that the bottom part of framebuffer does not fit in display

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Public bug reported:

$ xrandr --verbose --fb 1067x600 --output TV1 --set mode PAL --mode 800x600 --rate 50.00 --scale-from 1067x600 --output LVDS1 --mode 640x480 --pos 0x0 --panning 1067x600+0+0/1067x600+0+0
scaling TV1 by 1.333750x1.000000
scaling TV1 by 1.333750x1.000000
crtc 0: disable
crtc 0:      800x600  50.00 +0+0 "TV1"
crtc 1:      640x480  59.94 +0+0 "LVDS1

Expected result: the whole framebuffer fits on TV1.
Actual result:  Image is zoomed vertically, and, low part of framebuffer is cut. Horizontally ok.

Workaround:

$ xrandr --verbose --fb 1067x600 --output TV1 --set mode PAL --mode 800x600 --rate 50.00 --scale-from 1067x720 --output LVDS1 --mode 640x480 --pos 0x0 --panning 1067x600+0+0/1067x600+0+0
scaling TV1 by 1.333750x1.200000
scaling TV1 by 1.333750x1.200000
xrandr: specified screen 1067x600 not large enough for output TV1 (1067x720+0+0)
crtc 0:      800x600  50.00 +0+0 "TV1"
crtc 1:      640x480  59.94 +0+0 "LVDS1

$ lspci -v|grep -A 15 VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03) (prog-if 00 [VGA controller])
 Subsystem: Lenovo Device 3801
 Flags: bus master, fast devsel, latency 0, IRQ 16
 Memory at d0200000 (32-bit, non-prefetchable) [size=512K]
 I/O ports at 1800 [size=8]
 Memory at c0000000 (32-bit, prefetchable) [size=256M]
 Memory at d0300000 (32-bit, non-prefetchable) [size=256K]
 Expansion ROM at <unassigned> [disabled]
 Capabilities: <access denied>
 Kernel driver in use: i915

00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
 Subsystem: Lenovo Device 3801
 Flags: bus master, fast devsel, latency 0
 Memory at d0280000 (32-bit, non-prefetchable) [size=512K]
 Capabilities: <access denied>

Physical aspect ratio of TV is 16:9.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: x11-xserver-utils 7.7+4ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-27.32-generic 4.2.8-ckt1
Uname: Linux 4.2.0-27-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: XFCE
Date: Wed Feb  3 09:46:28 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-01-24 (9 days ago)
InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: x11-xserver-utils
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: x11-xserver-utils (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug wily

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https://bugs.launchpad.net/bugs/1541247

Title:
  Zooms image on TV horizontally so that the bottom part of framebuffer
  does not fit in display

Status in x11-xserver-utils package in Ubuntu:
  New

Bug description:
  $ xrandr --verbose --fb 1067x600 --output TV1 --set mode PAL --mode 800x600 --rate 50.00 --scale-from 1067x600 --output LVDS1 --mode 640x480 --pos 0x0 --panning 1067x600+0+0/1067x600+0+0
  scaling TV1 by 1.333750x1.000000
  scaling TV1 by 1.333750x1.000000
  crtc 0: disable
  crtc 0:      800x600  50.00 +0+0 "TV1"
  crtc 1:      640x480  59.94 +0+0 "LVDS1

  Expected result: the whole framebuffer fits on TV1.
  Actual result:  Image is zoomed vertically, and, low part of framebuffer is cut. Horizontally ok.

  Workaround:

  $ xrandr --verbose --fb 1067x600 --output TV1 --set mode PAL --mode 800x600 --rate 50.00 --scale-from 1067x720 --output LVDS1 --mode 640x480 --pos 0x0 --panning 1067x600+0+0/1067x600+0+0
  scaling TV1 by 1.333750x1.200000
  scaling TV1 by 1.333750x1.200000
  xrandr: specified screen 1067x600 not large enough for output TV1 (1067x720+0+0)
  crtc 0:      800x600  50.00 +0+0 "TV1"
  crtc 1:      640x480  59.94 +0+0 "LVDS1

  $ lspci -v|grep -A 15 VGA
  00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device 3801
   Flags: bus master, fast devsel, latency 0, IRQ 16
   Memory at d0200000 (32-bit, non-prefetchable) [size=512K]
   I/O ports at 1800 [size=8]
   Memory at c0000000 (32-bit, prefetchable) [size=256M]
   Memory at d0300000 (32-bit, non-prefetchable) [size=256K]
   Expansion ROM at <unassigned> [disabled]
   Capabilities: <access denied>
   Kernel driver in use: i915

  00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
   Subsystem: Lenovo Device 3801
   Flags: bus master, fast devsel, latency 0
   Memory at d0280000 (32-bit, non-prefetchable) [size=512K]
   Capabilities: <access denied>

  Physical aspect ratio of TV is 16:9.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: x11-xserver-utils 7.7+4ubuntu1
  ProcVersionSignature: Ubuntu 4.2.0-27.32-generic 4.2.8-ckt1
  Uname: Linux 4.2.0-27-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Wed Feb  3 09:46:28 2016
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2016-01-24 (9 days ago)
  InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  SourcePackage: x11-xserver-utils
  UpgradeStatus: No upgrade log present (probably fresh install)

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