Arch Linux

Description:

First of all, I know about https://bugs.archlinux.org/task/31264, but the behavior here is a bit different. At least I think so, becaue here it doesn't happen on _every_ boot. If I'm proven wrong, my apologies.

This doesn't happen on _every_ boot, but about every 3-4 bootups. I use syslinux as a bootloader and systemd as init system.

What I do is, I start the laptop, see syslinux's menu, but as soon as radeon is being loaded with kms (early method), the screen goes black. Then it boots (I see that it does on the disc activity control light) and tries to start X (in this moment I see the screen flicker for a short moment) and then it's done. This is possible because I configured systemd to automatically start X.

What I did, when it just happened: I logged in blindly and ran "dmesg > dmesg_failed". Then I hit Ctrl+Alt+Del to reboot the machine. Then it worked. Again I ran "dmesg > dmesg_worked".

Here are the log files:
dmesg_failed: http://codepad.org/XQpJ6pQt
dmesg_worked: http://codepad.org/Fu4pwl37

I looked through them and diff'ed them. The start of the boot process looks fine, the log files are the same. But two lines appear on the "worked"-log which aren't in the "failed"-log

[ 15.515877] systemd[1]: tmp.mount: Directory /tmp to mount over is not empty, mounting anyway. (To see the over-mounted files, please manually mount the underlying file system to a secondary location.)
[ 26.336230] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored

I'm not sure if and how they can be related to the problem, but I think too much information is better than too little.

The interesting part is right at the end of the "failed"-log, This is caused by the failed launch of X.

[ 51.378213] radeon 0000:00:01.0: GPU lockup (waiting for 0x0000000000000004 last fence id 0x0000000000000001)
[ 51.378236] [drm] Disabling audio support
[ 51.379397] radeon 0000:00:01.0: GPU softreset
[ 51.379406] radeon 0000:00:01.0: GRBM_STATUS=0xA0003828
[ 51.379413] radeon 0000:00:01.0: GRBM_STATUS_SE0=0x00000007
[ 51.379420] radeon 0000:00:01.0: GRBM_STATUS_SE1=0x00000007
[ 51.379428] radeon 0000:00:01.0: SRBM_STATUS=0x20020940
[ 51.536902] radeon 0000:00:01.0: Wait for MC idle timedout !
[ 51.536907] radeon 0000:00:01.0: GRBM_SOFT_RESET=0x00007F6B
[ 51.537012] radeon 0000:00:01.0: GRBM_STATUS=0x00003828
[ 51.537015] radeon 0000:00:01.0: GRBM_STATUS_SE0=0x00000007
[ 51.537019] radeon 0000:00:01.0: GRBM_STATUS_SE1=0x00000007
[ 51.537022] radeon 0000:00:01.0: SRBM_STATUS=0x20020940
[ 51.538026] radeon 0000:00:01.0: GPU reset succeed
[ 51.704859] radeon 0000:00:01.0: Wait for MC idle timedout !
[ 51.861889] radeon 0000:00:01.0: Wait for MC idle timedout !
[ 51.864715] [drm] PCIE GART of 512M enabled (table at 0x0000000000040000).
[ 51.864825] radeon 0000:00:01.0: WB enabled
[ 51.864832] radeon 0000:00:01.0: fence driver on ring 0 use gpu addr 0x0000000018000c00 and cpu addr 0xffff880138e50c00
[ 52.043389] [drm:r600_ring_test] *ERROR* radeon: ring 0 test failed (scratch(0x8500)=0xCAFEDEAD)
[ 52.043395] [drm:evergreen_resume] *ERROR* evergreen startup failed on resume

Looks like somebody on the forums has the same problem (found it by googling for "drm:evergreen_resume ERROR".)

https://bbs.archlinux.org/viewtopic.php?pid=1163369#p1163369

No solution found there.

Additional info:
* package version(s)
linux 3.5.4-1
systemd 191-1 (but had the issue with 189-1 as well)
xf86-video-ati 1:6.14.6-1

* config and/or log files etc.
dmesg_failed: http://codepad.org/XQpJ6pQt
dmesg_worked: http://codepad.org/Fu4pwl37

Steps to reproduce:
Boot up and see ... well, nothing ;)