Hello Jon,

Yes, most content in windows and be zoom'd and I've been able to work with it, but it's the window decorations and controls that are almost unreadable.

I had gone through the man pages and tried many things suggested in them. But I must be doing it wrong, or in the wrong place.

As another test, from my cygwin64 home directory, I used:

startxwin -- -dpi 500

Similar to the example given in
   http://xfree86.cygwin.com/docs/man1/startxwin.1.html

In the log I found:

[ XWin was started with the following command line:

[ /usr/bin/XWin :0 -multiwindow -dpi 500 -auth /home/Higgins/.serverauth.10276

[ ddxProcessArgument - Initializing default screens
[ winInitializeScreenDefaults - primary monitor w 3200 h 1800
[ winInitializeScreenDefaults - native DPI x 240 y 240
[ [ 45339.640] (II) xorg.conf is not supported
[ [ 45339.640] (II) See http://x.cygwin.com/docs/faq/cygwin-x-faq.html [ for more information
[ [ 45339.640] LoadPreferences: /home/Higgins/.XWinrc not found
[ [ 45339.640] LoadPreferences: Loading /etc/X11/system.XWinrc

Then again I tried:

startxwin -- -screen 0 3200x1800@1

and the log output is attached ..

Thank you

---rob---

On 2016-07-22 9:25 AM, Jon Turney wrote:
On 22/07/2016 05:23, Dr. Rob Higgins wrote:
I cannot find, after two days, any documentation on how and where to
specify resolution parameters. I must be barking up the wrong trees.

My laptop under Windows has recommended resolution set at 3200 x 1800

CygwinX X Windows are much to small, and barely readable.

I guess this means that e.g. xterm font is too small, and so a 80x24
character window is small?

Can anyone just tell me where to look, or what to specify?

To answer the specific question, you can specify the a display
resolution using the '-dpi' option.

The "configuration" chapter of the user guide [1] points to "man XWin"
[2], which in turn points to "man Xserver" [3] for general server
options, including that one.

[1] http://x.cygwin.com/docs/ug/cygwin-x-ug.html
[2] http://x.cygwin.com/docs/man1/XWin.1.html
[3] http://x.cygwin.com/docs/man1/Xserver.1.html

If changing that helps, I'd be very interested to know what the
autodetected value for dpi is, which is reported in
/var/log/xwin/XWin.0.log


Welcome to the XWin X Server
Vendor: The Cygwin/X Project
Release: 1.18.3.0
OS: CYGWIN_NT-10.0 asusi7 2.5.2(0.297/5/3) 2016-06-23 14:29 x86_64
OS: Windows 10  [Windows NT 10.0 build 10586] (Win64)
Package: version 1.18.3-1 built 2016-06-20

XWin was started with the following command line:

/usr/bin/XWin :0 -multiwindow -screen 0 3200x1800@1 -auth 
 /home/Higgins/.serverauth.9680 

ddxProcessArgument - Initializing default screens
winInitializeScreenDefaults - primary monitor w 3200 h 1800
winInitializeScreenDefaults - native DPI x 240 y 240
winInitializeScreens - 1
winInitializeScreen - 0
ddxProcessArgument - screen - Found ``WxD'' arg
ddxProcessArgument - screen - Found Valid ``@Monitor'' = 1 arg
[ 49128.312] (II) xorg.conf is not supported
[ 49128.312] (II) See http://x.cygwin.com/docs/faq/cygwin-x-faq.html for more 
information
[ 49128.312] LoadPreferences: /home/Higgins/.XWinrc not found
[ 49128.312] LoadPreferences: Loading /etc/X11/system.XWinrc
[ 49128.312] LoadPreferences: Done parsing the configuration file...
[ 49128.312] winDetectSupportedEngines - RemoteSession: no
[ 49128.312] winDetectSupportedEngines - DirectDraw4 installed, allowing 
ShadowDDNL
[ 49128.312] winDetectSupportedEngines - Returning, supported engines 00000005
[ 49128.312] winSetEngine - Multi Window or Rootless => ShadowGDI
[ 49128.312] winScreenInit - Using Windows display depth of 32 bits per pixel
[ 49128.375] winAllocateFBShadowGDI - Creating DIB with width: 3200 height: 
1800 depth: 32
[ 49128.375] winFinishScreenInitFB - Masks: 00ff0000 0000ff00 000000ff
[ 49128.375] winInitVisualsShadowGDI - Masks 00ff0000 0000ff00 000000ff BPRGB 8 
d 24 bpp 32
[ 49128.390] MIT-SHM extension disabled due to lack of kernel support
[ 49128.390] XFree86-Bigfont extension local-client optimization disabled due 
to lack of shared memory support in the kernel
[ 49128.390] glWinSelectGLimplementation: Loaded 'cygnativeGLthunk.dll'
[ 49128.390] (II) AIGLX: Testing pixelFormatIndex 1
[ 49128.406] GL_VERSION:     4.4.0 - Build 20.19.15.4444
[ 49128.406] GL_VENDOR:      Intel
[ 49128.406] GL_RENDERER:    Intel(R) HD Graphics 520
[ 49128.406] (II) AIGLX: enabled GLX_SGI_make_current_read
[ 49128.406] (II) AIGLX: enabled GLX_MESA_copy_sub_buffer
[ 49128.406] (II) AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control
[ 49128.406] (II) AIGLX: enabled GLX_SGIX_pbuffer
[ 49128.406] (II) AIGLX: enabled GLX_ARB_multisample and GLX_SGIS_multisample
[ 49128.406] (II) 103 pixel formats reported by wglGetPixelFormatAttribivARB
[ 49128.406] (II) AIGLX: Set GLX version to 1.4
[ 49128.421] (II) 58 fbConfigs
[ 49128.421] (II) ignored pixel formats: 0 not OpenGL, 6 RBGA float, 3 RGBA 
unsigned float, 0 unknown pixel type, 36 unaccelerated
[ 49128.421] (II) GLX: Initialized Win32 native WGL GL provider for screen 0
[ 49128.640] winPointerWarpCursor - Discarding first warp: 1600 900
[ 49128.640] (--) 8 mouse buttons found
[ 49128.640] (--) Setting autorepeat to delay=500, rate=31
[ 49128.640] (--) Windows keyboard layout: "00000409" (00000409) "US", type 7
[ 49128.640] (--) Found matching XKB configuration "English (USA)"
[ 49128.640] (--) Model = "pc105" Layout = "us" Variant = "none" Options = 
"none"
[ 49128.640] Rules = "base" Model = "pc105" Layout = "us" Variant = "none" 
Options = "none"
[ 49128.640] winInitMultiWindowWM - DISPLAY=:0.0
[ 49128.640] winMultiWindowXMsgProc - DISPLAY=:0.0
[ 49128.703] winMultiWindowXMsgProc - xcb_connect() returned and successfully 
opened the display.
[ 49128.703] winClipboardThreadProc - DISPLAY=:0.0
[ 49128.703] OS maintains clipboard viewer chain: yes
[ 49128.703] winProcEstablishConnection - winInitClipboard returned.
[ 49128.703] OS maintains clipboard viewer chain: yes
[ 49128.703] winInitMultiWindowWM - xcb_connect () returned and successfully 
opened the display.
[ 49128.703] Using Composite redirection
[ 49128.703] winClipboardProc - XOpenDisplay () returned and successfully 
opened the display.
[ 49139.625] SetupSysMenu: GetSystemMenu() failed for HWND 0x10ad2
[ 49161.203] SetupSysMenu: GetSystemMenu() failed for HWND 0x60a8a
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