Red Hat Bugzilla – Bug 216528
vesa framebuffer (vga=0x317) parameter blanks display
Last modified: 2007-11-30 17:07:37 EST
Description of problem:
If the vga=0x317 kernel boot parameter is present, there is no text display.
The screen stays blank, while the system starts up in the background.
Version-Release number of selected component (if applicable):
This is the sample section taken from my grub.conf that shows the vga=0x317
title Red Hat Enterprise Linux Client (2.6.18-1.2747.el5)
kernel /vmlinuz-2.6.18-1.2747.el5 ro root=LABEL=/ rhgb quiet vga=0x317
If the vga=0x317 boot parameter is present, no graphical display. If it's
removed, the boot process is visible at normal text resolution.
Steps to Reproduce:
1. add vga=03x17 to kernel parameters.
3. Connect to system with SSH and edit grub.conf to remove kernel parameter.
Blanks text display
The utilisation of the vga= goes on kernel line and controls the resolution and
colour depth of framebuffer, which should load 128x48 (or 1024x768 pixel)
resolution instead of the default 80x24.
| 640x480 800x600 1024x768 1280x1024
256 | 0x301 0x303 0x305 0x307
32k | 0x310 0x313 0x316 0x319
64k | 0x311 0x314 0x317 0x31A
16M | 0x312 0x315 0x318 0x31B
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release. Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products. This request is not yet committed for inclusion in an Update
*** This bug has been marked as a duplicate of 236195 ***