On Wednesday 10 December 2014 08:15:04 Mike Galbraith wrote: > On Tue, 2014-12-09 at 22:33 +0100, Ondrej Zary wrote: > > Hello, > > I'm doing some work on tridentfb driver but encountered a weird problem. > > > > When I compile custom kernel with tridentfb, it hangs with Blade3D card > > (ID 0x9880) in blade_image_blit(). The screen is blank with some > > artifacts and machine does not respond to ping or keyboard. However, it > > can be rebooted by Alt+SysRq+B. It works fine with other cards (3DImage > > 9750 and CyberBlade XP) with no blit implementation. Commenting out > > contents of blade_image_blit() function makes the hang go away (nothing > > useful on the screen, of course). > > > > The weird thing is that the Blade3D card works fine when I load Debian > > kernels! Debian 3.16-0.bpo.3-686-pae works fine but when I compile 3.16 > > kernel, it hangs. > > > > Any ideas? > > I'd start by looking for what Debian changed in source and/or config. Seems that the problem appears only of CONFIG_CC_OPTIMIZE_FOR_SIZE is enabled. Really weird. -- Ondrej Zary -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
