text mode "分辨率"切换的问题

[new1mm]

因做一个测试程序需要动态改变text模式的“分辨率”，目前使用RHEL4的系统，下载了一个svgalib-1.9.24的程序，因为其中有restoretextmode命令。
问题：
使用vga=ask作为启动参数， 进入80x50模式显示正常，然后使用restoretextmode -w 80x50存储该模式，但是使用resizecons 80x50恢复时只能显示44行。试过使用restorefont同时保存字体无效果。
比较发现行间距变大了，不知有何良策？

谢谢了

[fierygnu]

stty能设置吗？

[new1mm]

no, stty only let kernel know the line and row number, and can not change display

[fierygnu]

明白了。试试resizecons

[new1mm]

I was just used resizecons, but 50 lines saved, 44 lines restored.

[fierygnu]

一直都是用resizecons吗？

[new1mm]

Yes, use restoretextmode -w to save and resizecons to restore

[fierygnu]

仔细看了一下man，
Most likely, the wrong font is loaded, and you may want to do another setfont yourself afterwards.

[new1mm]

I tried a restorefont -w to save the font in right mode,
and run restorefont -r to load the font after resizecons, but no improved.

[fierygnu]

试试用setfont保存和恢复？
我手边没系统

[new1mm]

Maybe my hardware is not very stable, and my duty is catch the vga card or BIOS's bug, can you do a try for it in your machine? thank you very much.

[fierygnu]

可以。手边有系统了我试一下。