def hot_reset_nvidia():
bus_ids = get_gpus_bus_ids(notation_fix=False)
if "nvidia" not in bus_ids.keys():
raise PCIError("Nvidia not in PCI bus")
nvidia_pci_bridges_ids_list = _get_connected_pci_bridges(bus_ids["nvidia"])
if len(nvidia_pci_bridges_ids_list) == 0:
raise PCIError(
"PCI hot reset : cannot find PCI bridge connected to Nvidia card")
if len(nvidia_pci_bridges_ids_list) > 1:
raise PCIError(
"PCI hot reset : found more than one PCI bridge connected to Nvidia card"
)
nvidia_pci_bridge = nvidia_pci_bridges_ids_list[0]
print("Removing Nvidia from PCI bridge")
remove_nvidia()
print("Triggering PCI hot reset of bridge %s" % nvidia_pci_bridge)
try:
exec_bash("setpci -s %s 0x488.l=0x2000000:0x2000000" %
nvidia_pci_bridge)
except BashError as e:
raise PCIError("failed to run setpci command : %s" % str(e))
print("Rescanning PCI bus")
rescan()
if not is_nvidia_visible():
raise PCIError("failed to bring Nvidia card back")
def kill_current_xorg_servers():
pids_list = get_xorg_servers_pids()
if len(pids_list) == 0:
return
for signal in ["SIGTERM", "SIGKILL"]:
if len(pids_list) > 0:
print("There are %d X11 servers remaining, terminating them manually with %s" % (len(pids_list), signal))
for pid in pids_list:
try:
exec_bash("kill -s %s %d" % (signal, pid))
except BashError:
pass
success = poll_block(_is_xorg_running)
if success:
return
else:
pids_list = get_xorg_servers_pids()
if not success:
raise XorgError("Failed to kill all X11 servers")
def is_module_loaded(module_name):
try:
exec_bash("lsmod | grep -E \"^%s \"" % module_name)
except BashError:
return False
else:
return True
def _unload_nvidia_modules():
print("Unloading Nvidia modules (if any)")
try:
exec_bash("modprobe -r nvidia_drm nvidia_modeset nvidia_uvm nvidia")
except BashError as e:
raise KernelSetupError("Cannot unload Nvidia modules : %s" % str(e))
def _unload_nouveau():
print("Unloading nouveau module (if any)")
try:
exec_bash("modprobe -r nouveau")
except BashError as e:
raise KernelSetupError("Cannot unload nouveau : %s" % str(e))
def is_module_available(module_name):
try:
exec_bash("modinfo %s" % module_name)
except BashError:
return False
else:
return True
def _unload_bbswitch():
print("Unloading bbswitch module (if any)")
try:
exec_bash("modprobe -r bbswitch")
except BashError as e:
raise KernelSetupError("Cannot unload bbswitch : %s" % str(e))
def _is_service_active_bash(service_name):
try:
exec_bash("systemctl is-active %s" % service_name)
except BashError:
return False
else:
return True
def _load_nouveau(config):
print("Loading nouveau module")
modeset_value = 1 if config["intel"]["modeset"] == "yes" else 0
try:
exec_bash("modprobe nouveau modeset=%d" % modeset_value)
except BashError as e:
raise KernelSetupError("Cannot load nouveau : %s" % str(e))
def _load_nouveau(config):
modeset_value = {"yes": 1, "no": 0}[config["intel"]["modeset"]]
print("Loading nouveau module")
try:
exec_bash("modprobe nouveau modeset=%d" % modeset_value)
except BashError as e:
raise KernelSetupError("Cannot load nouveau : %s" % str(e))
def _load_acpi_call():
if not checks.is_module_available("acpi_call"):
raise KernelSetupError("Module acpi_call not available for current kernel.")
print("Loading acpi_call module")
try:
exec_bash("modprobe acpi_call")
except BashError as e:
raise KernelSetupError("Cannot load acpi_call : %s" % str(e))
def _load_bbswitch():
if not checks.is_module_available("bbswitch"):
raise KernelSetupError("Module bbswitch not available for current kernel.")
print("Loading bbswitch module")
try:
exec_bash("modprobe bbswitch")
except BashError as e:
raise KernelSetupError("Cannot load bbswitch : %s" % str(e))
def read_gpu_mode():
try:
exec_bash("glxinfo")
except BashError as e:
raise CheckError("Cannot find the current mode : %s" % str(e))
try:
exec_bash("glxinfo | grep NVIDIA")
return "nvidia"
except BashError:
return "intel"
def set_DPI(config):
dpi_str = config["nvidia"]["DPI"]
if dpi_str == "":
return
try:
exec_bash("xrandr --dpi %s" % dpi_str)
except BashError as e:
raise XorgSetupError("Cannot set DPI : %s" % str(e))
def _load_module(available_modules, module, options=None):
options = options or ""
print("Loading module %s" % module)
if module not in available_modules:
raise KernelSetupError("module %s is not available for current kernel."
" Is the corresponding package installed ?" % module)
try:
exec_bash("modprobe %s %s" % (module, options))
except BashError as e:
raise KernelSetupError("error running modprobe for %s : %s" % (module, str(e)))
def _load_nvidia_modules(config):
print("Loading Nvidia modules")
pat_value = _get_PAT_parameter_value(config)
modeset_value = 1 if config["nvidia"]["modeset"] == "yes" else 0
try:
exec_bash("modprobe nvidia NVreg_UsePageAttributeTable=%d" % pat_value)
exec_bash("modprobe nvidia_drm modeset=%d" % modeset_value)
except BashError as e:
raise KernelSetupError("Cannot load Nvidia modules : %s" % str(e))
def logout_current_desktop_session():
print("Logging out the current desktop session")
try:
session_bus = dbus.SessionBus()
except dbus.exceptions.DBusException:
pass
else:
# KDE Plasma
try:
kde = session_bus.get_object("org.kde.ksmserver", "/KSMServer")
kde.logout(0, 3, 3, dbus_interface="org.kde.KSMServerInterface")
except dbus.exceptions.DBusException:
pass
# GNOME
try:
gnome = session_bus.get_object("org.gnome.SessionManager",
"/org/gnome/SessionManager")
gnome.Logout(1, dbus_interface="org.gnome.SessionManager")
except dbus.exceptions.DBusException:
pass
# XFCE
try:
xfce = session_bus.get_object("org.xfce.SessionManager",
"/org/xfce/SessionManager")
xfce.Logout(False, True, dbus_interface="org.xfce.Session.Manager")
except dbus.exceptions.DBusException:
pass
# Deepin
try:
deepin = session_bus.get_object('com.deepin.SessionManager',
'/com/deepin/SessionManager')
deepin.RequestLogout()
except dbus.exceptions.DBusException:
pass
# i3
try:
exec_bash("i3-msg exit")
except BashError:
pass
# openbox
try:
exec_bash("openbox --exit")
except BashError:
pass
def _unload_modules(available_modules, modules_list):
modules_to_unload = [m for m in modules_list if m in available_modules]
if len(modules_to_unload) == 0:
return
print("Unloading modules %s (if loaded)" % str(modules_to_unload))
try:
# Unlike "rmmod", "modprobe -r" does not return an error if the module is not loaded.
exec_bash("modprobe -r " + " ".join(modules_to_unload))
except BashError as e:
raise KernelSetupError("Cannot unload modules %s : %s" % (str(modules_to_unload), str(e)))
def _is_xorg_running():
try:
exec_bash("pidof X")
return True
except BashError:
pass
try:
exec_bash("pidof Xorg")
return True
except BashError:
pass
return False
def _set_bbswitch_mode(requested_gpu_state):
assert requested_gpu_state in ["OFF", "ON"]
print("Setting GPU power to %s via bbswitch" % requested_gpu_state)
exec_bash("echo %s | tee /proc/acpi/bbswitch" % requested_gpu_state)
current_gpu_state = ("ON" if checks.is_gpu_powered() else "OFF")
if current_gpu_state != requested_gpu_state:
raise KernelSetupError("bbswitch failed to set the GPU to %s" %
requested_gpu_state)
else:
print("bbswitch reports that the GPU is %s" % current_gpu_state)
def switch_to_intel(config):
print("Switching to Intel")
# Nvidia modules
print("Unloading Nvidia modules")
try:
exec_bash("modprobe -r nvidia_drm nvidia_modeset nvidia_uvm nvidia")
except BashError as e:
raise SwitchError("Cannot unload Nvidia modules : %s" % str(e))
if config["optimus"]["switching"] == "bbswitch":
# Load bbswitch
print("Loading bbswitch module")
try:
exec_bash("modprobe bbswitch")
except BashError as e:
raise SwitchError("Cannot load bbswitch : %s" % str(e))
# bbswitch switching
print("Ordering OFF via bbswitch")
exec_bash("echo OFF | tee /proc/acpi/bbswitch")
if checks.is_gpu_powered():
raise SwitchError("bbswitch refuses to turn OFF the GPU")
else:
print("bbswitch reports that the GPU is OFF")
elif config["optimus"]["switching"] == "nouveau":
modeset_value = {"yes": 1, "no": 0}[config["intel"]["modeset"]]
# Loading nouveau
print("Loading nouveau module")
try:
exec_bash("modprobe nouveau modeset=%d" % modeset_value)
except BashError as e:
raise SwitchError("Cannot load nouveau : %s" % str(e))
else:
print("Power switching backend is disabled.")
# PCI power management
if config["optimus"]["pci_power_control"] == "yes":
if config["optimus"]["switching"] == "bbswitch":
print("bbswitch is enabled, pci_power_control option ignored.")
else:
try:
pci.set_power_management(True)
except pci.PCIError as e:
print("WARNING : Cannot set PCI power management : %s" % str(e))
# Xorg configuration
print("Configuring Xorg...")
configure_xorg(config, mode="intel")
# Login managers configuration
print("Configuring login managers..")
configure_login_managers(config, mode="intel")
def _try_custom_set_power_state(state):
if state == "ON":
script_path = envs.NVIDIA_MANUAL_ENABLE_SCRIPT_PATH
elif state == "OFF":
script_path = envs.NVIDIA_MANUAL_DISABLE_SCRIPT_PATH
print("Running %s" % script_path)
try:
exec_bash(script_path)
except BashError as e:
print("ERROR : cannot run %s. Continuing anyways. Error is : %s" %
(script_path, str(e)))
def setup_PRIME():
try:
requested_mode = read_requested_mode()
except VarError as e:
raise XorgSetupError(
"Cannot setup PRIME : cannot read requested mode : %s" % str(e))
if requested_mode == "nvidia":
print("Running xrandr commands")
try:
exec_bash("xrandr --setprovideroutputsource modesetting NVIDIA-0")
exec_bash("xrandr --auto")
except BashError as e:
raise XorgSetupError("Cannot setup PRIME : %s" % str(e))
print("Running %s" % envs.XSETUP_SCRIPT_NVIDIA)
try:
exec_bash(envs.XSETUP_SCRIPT_NVIDIA)
except BashError as e:
print("ERROR : cannot run %s : %s" %
(envs.XSETUP_SCRIPT_NVIDIA, str(e)))
elif requested_mode == "intel":
print("Running %s" % envs.XSETUP_SCRIPT_INTEL)
try:
exec_bash(envs.XSETUP_SCRIPT_INTEL)
except BashError as e:
print("ERROR : cannot run %s : %s" %
(envs.XSETUP_SCRIPT_INTEL, str(e)))
def restart_login_manager(config):
login_manager_control = config["optimus"]["login_manager_control"]
if login_manager_control != "yes":
print("Login manager control is disabled, not restarting it.")
return
try:
exec_bash("systemctl restart display-manager")
except BashError as e:
raise LoginManagerError("Warning : cannot restart service display-manager : %s" % str(e))
if not checks.is_login_manager_active(config):
raise LoginManagerError("Warning : cannot restart service display-manager.")
def get_xorg_servers_pids():
try:
x_pids = exec_bash("pidof X")
except BashError:
x_pids = ""
try:
xorg_pids = exec_bash("pidof Xorg")
except BashError:
xorg_pids = ""
pids_str_list = (x_pids.split() + xorg_pids.split())
return [int(p_str) for p_str in pids_str_list]
def _get_bus_ids(match_pci_class, match_vendor_id, notation_fix=True):
try:
lspci_output = exec_bash("lspci -n").stdout.decode('utf-8')
except BashError as e:
raise PCIError("cannot run lspci -n : %s" % str(e))
bus_ids_list = []
for line in lspci_output.splitlines():
items = line.split(" ")
bus_id = items[0]
if notation_fix:
# Xorg expects bus IDs separated by colons in decimal instead of
# hexadecimal format without any leading zeroes and prefixed with
# `PCI:`, so `3c:00:0` should become `PCI:60:0:0`
bus_id = "PCI:" + ":".join(
str(int(field, 16)) for field in re.split("[.:]", bus_id))
pci_class = items[1][:-1]
vendor_id, product_id = items[2].split(":")
if re.fullmatch(match_pci_class, pci_class) and re.fullmatch(
match_vendor_id, vendor_id):
bus_ids_list.append(bus_id)
return bus_ids_list
def get_PIDs_from_process_names(processes_names_list):
PIDs_list = []
for p_name in processes_names_list:
try:
process_PIDs_str = exec_bash("pidof %s" %
p_name).stdout.decode('utf-8')[:-1]
except BashError:
continue
try:
process_PIDs_list = [
int(pid_str) for pid_str in process_PIDs_str.split(" ")
]
except ValueError:
print(
"Warning : cannot parse pidof output for process %s : invalid value : %s"
% (p_name, process_PIDs_str))
continue
PIDs_list += process_PIDs_list
return PIDs_list
def kill_current_xorg_servers():
pids_list = get_xorg_servers_pids()
if len(pids_list) > 0:
print("There are %d X11 servers remaining, terminating them manually" % len(pids_list))
for pid in pids_list:
try:
exec_bash("kill -9 %d" % pid)
except BashError:
pass
success = poll_block(_is_xorg_running)
if not success:
raise XorgError("Failed to kill all X11 servers")
def _is_service_active(service_name):
try:
state = exec_bash("systemctl is-active %s.service" %
service_name).stdout.decode('utf-8')[:-1]
except BashError:
return False
else:
return (state == "active")
def get_PID_user(PID_value):
try:
user = exec_bash("ps -o uname= -p %d" %
PID_value).stdout.decode('utf-8')[:-1]
except BashError:
raise ProcessesError("PID %d does not exist" % PID_value)
return user