https://bugs.freedesktop.org/show_bug.cgi?id=41340
Summary: vga_switcheroo doesn't work with AMD Radeon HD 6770M Product: DRI Version: unspecified Platform: x86-64 (AMD64) OS/Version: Linux (All) Status: NEW Severity: critical Priority: high Component: DRM/Radeon AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: mlambda@gmail.com
Created an attachment (id=51758) --> (https://bugs.freedesktop.org/attachment.cgi?id=51758) Kernel config
How to reproduce: cd /sys/kernel/debug/vgaswitcheroo/; echo ON >switch; echo DDIS >switch Hit Ctrl+Alt+Backspace to restart X-Server
Expected Result: Switch to discrete GPU
Actual Result: System freezes, but can be restarted with Ctrl+Alt+Esc
Notebook: HP Pavilion dv7 6104eg Kernel: latest git kernel (commit d5767c53535ac79758084773418e0ad186aba4a2), Linux hp 3.1.0-rc8-custom #1 SMP Wed Sep 28 21:23:06 CEST 2011 x86_64 x86_64 x86_64 GNU/Linux Distribution: Ubuntu 11.04 64bit
lsmod: Module Size Used by vboxnetadp 13340 0 vboxnetflt 28297 0 vboxdrv 252684 2 vboxnetadp,vboxnetflt radeon 1016473 0 iwlagn 311183 0 ttm 72079 1 radeon r8169 55918 0
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