radeonfb regression: disappearing fonts upon VT switch

[Chris Radek]

Binary package hint: linux-image-2.6.24-12-server

This is an Ubuntu 8.04 x86_64 16-core Dell PowerEdge R900 system with built-in ATI video. The system does not run X. I am using the boot option video=radeonfb:1024x768

After upgrading from linux-image 2.6.24-7.12 to 2.6.24-12.22, after booting, the VT#1 console works normally. However when I switch to VT#2, the screen is blank except for the cursor. Normally there would be a login prompt. Upon switching back to VT#1 that console is blank too.

Rebuilding with this patch reversed:

http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-hardy.git;a=commitdiff;h=2e563cab90870e798495006a83ad78ea79bfda93

fixes the problem.

% lspci -v|grep VGA
1b:0c.0 VGA compatible controller: ATI Technologies Inc ES1000 (rev 02) (prog-if 00 [VGA controller])

% dmesg|grep radeonfb
[ 0.000000] Command line: root=/dev/mapper/lucky-root ro video=radeonfb:1024x768 quiet
[ 0.000000] Kernel command line: root=/dev/mapper/lucky-root ro video=radeonfb:1024x768 quiet
[ 130.923089] radeonfb: Found Intel x86 BIOS ROM Image
[ 130.939120] radeonfb: Retrieved PLL infos from BIOS
[ 130.939122] radeonfb: Reference=27.00 MHz (RefDiv=12) Memory=200.00 Mhz, System=200.00 MHz
[ 130.939123] radeonfb: PLL min 20000 max 50000
[ 130.939315] radeonfb: Reversed TMDS detected
[ 133.670424] radeonfb: Monitor 1 type CRT found
[ 133.670426] radeonfb: Monitor 2 type no found
[ 134.263958] radeonfb (0000:1b:0c.0): ATI Radeon Q^

[Chris Radek (chris-timeguy)]

I suspect this fix will also fix Bug #201591

It is apparently not specific to radeonfb.

[Leann Ogasawara (leannogasawara)]

Thanks Chris. I'll have the kernel team take a look. Thanks.

[Launchpad Janitor (janitor)]

Per a decision made by the Ubuntu Kernel Team, bugs will longer be assigned to the ubuntu-kernel-team in Launchpad as part of the bug triage process. The ubuntu-kernel-team is being unassigned from this bug report. Refer to https://wiki.ubuntu.com/KernelTeamBugPolicies for more information. Thanks.