Собрал ядро с поддержкой uvesafb. Загрузчик grub2 отображается нормально, /boot/grub/grub.cfg:
set gfxmode=1600x1200 terminal_output gfxterm
А для последующей установки размера в консоли можно набрать
fbset -xres 1600 -yres 1200 -a
Однако, иксы с nouveau отображают окна в i3 неполноценно: http://lubyagin.ru/ul/uvesafb-nouveau-i3-skype-shutter.png
Конфиг xorg.conf:
...
Section "Monitor"
Identifier "DELL 2007FP"
VendorName "DELL"
ModelName "2007FP"
# DisplaySize 407 305
DisplaySize 408 306
Option "DPMS" "true"
HorizSync 30.0 - 83.0
VertRefresh 56.0 - 76.0
# DELL 2007FP
# Modeline "1600x1200" 162.00 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync
# Modeline "1600x1200"x60.0 162.00 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync (75.0 kHz UeP)
# DELL 2001FP
# 1600x1200 @ 60.00 Hz (GTF) hsync: 74.52 kHz; pclk: 160.96 MHz
# Modeline "1600x1200" 160.96 1600 1704 1880 2160 1200 1201 1204 1242 -HSync +Vsync
# ModeLine "1600x1200" 160.00 1600 1664 1856 2160 1200 1201 1204 1250
# Modeline "1600x1200R" 130.25 1600 1648 1680 1760 1200 1203 1207 1235 +hsync -vsync
# Option "PreferredMode" "1600x1200R"
# 1600x1200 @ 60 hsync: 75.0 kHz
# ModeLine "1600x1200@60" 162.0 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync
EndSection
Section "Monitor"
Identifier "BENQ"
VendorName "BENQ"
ModelName "VW2430H"
DisplaySize 530 300
Option "DPMS" "true"
EndSection
Section "Device"
Identifier "Gainward GT430"
BoardName "GeForce GT 430"
Driver "nouveau"
# Driver "fbdev"
EndSection
Section "Screen"
Identifier "DellLandscapeLeft"
Device "Gainward GT430"
Monitor "DELL 2007FP"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1600x1200"
ViewPort 0 0
Virtual 1600 1200
EndSubsection
EndSection
