Red Hat Bugzilla – Bug 1029098
Unable to display GDM banner message in Fedora 20
Last modified: 2015-06-29 08:52:31 EDT
Description of problem:
Beginning with Fedora 20 Beta / GDM 3.10, I cannot get the banner message text to display using the methods that worked in Fedora 19. I cannot find any alternative method for setting that text that works.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.Install Fedora 20
2. Apply all current updates
3. Configure dconf
banner-message-text='NOTICE TO USERS\nThis is a Federal computer system and is the property of the United States Government.\nIt is for authorized use only. Users (authorized or unauthorized) have no\nexplicit or implicit expectation of privacy.\n\nAny or all uses of this system and all files on this system may be\nintercepted, monitored, recorded, copied, audited, inspected, and disclosed to\nauthorized site, Department of Energy, and law enforcement personnel, as well\nas authorized officials of other agencies, both domestic and foreign. By using this system,\nthe user consents to such interception, monitoring, recording, copying, auditing, inspection,\nand disclosure at the discretionof authorized site or Department of Energy personnel.\nUnauthorized or improper use of this system may result in administrative\ndisciplinary action and civil and criminal penalties.\n\nBy continuing to use this system you indicate your awareness of and consent to these\n terms and conditions of use. LOG OFF IMMEDIATELY if you do not agree to the conditions\nstated in this warning.'
4. Rebuild the dconf database
5. Restart the system
The username list is disabled (as desired) but the banner message text is not displayed.
After making the changes above and restarting, the GDM login screen should display the desired banner text.
Fedora 19 works fine, so it is possible that this method of configuring GDM is no longer valid. I have done some research and testing, and have no found a working method to accomplish this.
As a point of reference, RHEL 7 Beta works fine when configured this same way. The behavior has changed slightly from previous versions - the banner is only displayed after the user enters his username - but it is still displayed.
Try the following
1. Add a keyfile to the /etc/dconf/db/gdm.d directory and name it, for example, 01-banner-message.
2. Add the following content to the file:
banner-message-text='Type the banner message here.' * use a short message *
3. Run the dconf update command.
There maybe a limit on the characters accepted by that key.
Worked on my Fedora 20 x86_64 with a short banner message.
Thanks, the tip above does work with two caveats:
1. If I disable the username list ( disable-user-list=true ) the banner is not displayed.
2. Large banners are truncated.
I noticed while tweaking on this that the banner text appears briefly in the center of the screen but is then covered by the area used for the username text box and associated text and "Next" button.
The workaround I am using it to create a logo.png graphic with the text of the banner and set that to display with an entry in /etc/dconf/db/gdm.d/01-logo
then a dconf update and restart GDM
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