https://bugzilla.kernel.org/show_bug.cgi?id=115321 --- Comment #8 from Peter Wu <peter@xxxxxxxxxxxxx> --- Created attachment 224001 --> https://bugzilla.kernel.org/attachment.cgi?id=224001&action=edit possible patch (force integers into bools) Yay, I found documentation for the SGMD (SG Mode) field: 0 - None 1 - Switchable Graphics (Muxed) 2 - Switchable Graphics (Muxless) 3 - Discrete only (Related: SGFL stands for Switchable Graphics Feature List.) By the way, the functions mask 0x33 still covers ATPX_POWER_CONTROL_SUPPORTED ((1<<1) == 2). Something else must be broken. Based on the dmesg, we can see that: if (radeon_modeset == 1) { DRM_INFO("radeon kernel modesetting enabled.\n"); // <-- called driver = &kms_driver; // ... radeon_register_atpx_handler(); // called, see dmesg: // "[ 3.245994] vga_switcheroo: enabled" // radeon_atpx_init is called after the previous printk. // radeon_atpx_verify_interface is called and returns 0, see dmesg: // "[ 3.246040] ATPX version 1, functions 0x00000033" // now radeon_atpx_parse_functions(..., 0x33) is called which: // f->power_cntl = mask & ATPX_POWER_CONTROL_SUPPORTED; // = 0x33 & (1 << 1) = 2 (which is a truth value) } /* let modprobe override vga console setting */ return drm_pci_init(driver, pdriver); // driver.load (radeon_driver_load_kms) -> // radeon_device_init() -> // radeon_has_atpx_dgpu_power_cntl() -> // return radeon_atpx_priv.atpx.functions.power_cntl // 2 per above Maybe there is a compiler bug... can you try the attached patch? -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
