Red Hat Bugzilla – Bug 137976
Hangup after installation due to failed monitor detection
Last modified: 2007-11-30 17:10:53 EST
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Description of problem:
Tested on FC3-RC5 (FC3 test3, kernel 2.6.9-1.649)
The popular (and awesome) Samsung Syncmaster 213T (21" 1600x1200 LCD) fails to be detected during install.
FWIW, I am using the DVI input of the monitor (it has digital and analog input) on an Sun W1100z with NVIDIA Quadro4 NVS (nv driver).
What is really bad is that the default configuration by anaconda results in a hangup at boot time.
Since the system cannot boot, it cannot run firstboot and configure manually the monitor, and it cannot even allow the user to boot in text mode to fix the monitor settings by hand.
The only solution to get a bootable system is to boot from CD with 'linux rescue', and set the default init level to 3 (in /etc/inittab). After that, the system boots in text mode (asking firstboot-like questions in text mode) and all is well, including the ability to start X (in 800x600 mode by default) and run system-config-display.
I have had this problem since FC2.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install FC3 on system with Samsung 213T monitor
2. Install warns "unknown monitor", but goes fine until completion
3. Reboot system after install
Actual Results: Hangup on boot. Does not run firstboot. Cannot exit in text mode.
Expected Results: Ideally, monitor detected, configured, all is well.
Minimally, either firsboot should proceed, or fallback in text mode.
The settings for the Samsung Syncmaster 191TFT are working fine on the 213T.
HorizSync 30.0 - 81.0
VertRefresh 56.0 - 85.0
I cannot reproduce the hangup on an install with FC3 final, so I
The SyncMaster 213T is still not detected during install, but
firstboot proceeds O.K, so I can manually select 'Syncmaster
191TFT' (closest monitor) and X starts fine thereafter.