diff --git a/display.go b/display.go
index 2402836..b60f9f8 100644
--- a/display.go
+++ b/display.go
@@ -53,7 +53,7 @@ func lvObjShow(objName string) (*CtrlResponse, error) {
 	return lvObjClearFlag(objName, "LV_OBJ_FLAG_HIDDEN")
 }
 
-func lvObjSetOpacity(objName string, opacity int) (*CtrlResponse, error) {
+func lvObjSetOpacity(objName string, opacity int) (*CtrlResponse, error) { // nolint:unused
 	return CallCtrlAction("lv_obj_set_style_opa_layered", map[string]interface{}{"obj": objName, "opa": opacity})
 }
 
@@ -94,7 +94,6 @@ var (
 )
 
 func updateDisplay() {
-
 	updateLabelIfChanged("ui_Home_Content_Ip", networkState.IPv4String())
 	if usbState == "configured" {
 		updateLabelIfChanged("ui_Home_Footer_Usb_Status_Label", "Connected")
@@ -119,20 +118,20 @@ func updateDisplay() {
 	}
 
 	if cloudConnectionState == CloudConnectionStateNotConfigured {
-		lvObjHide("ui_Home_Header_Cloud_Status_Icon")
+		_, _ = lvObjHide("ui_Home_Header_Cloud_Status_Icon")
 	} else {
-		lvObjShow("ui_Home_Header_Cloud_Status_Icon")
+		_, _ = lvObjShow("ui_Home_Header_Cloud_Status_Icon")
 	}
 
 	switch cloudConnectionState {
 	case CloudConnectionStateDisconnected:
-		lvImgSetSrc("ui_Home_Header_Cloud_Status_Icon", "cloud_disconnected.png")
+		_, _ = lvImgSetSrc("ui_Home_Header_Cloud_Status_Icon", "cloud_disconnected.png")
 		stopCloudBlink()
 	case CloudConnectionStateConnecting:
-		lvImgSetSrc("ui_Home_Header_Cloud_Status_Icon", "cloud.png")
+		_, _ = lvImgSetSrc("ui_Home_Header_Cloud_Status_Icon", "cloud.png")
 		startCloudBlink()
 	case CloudConnectionStateConnected:
-		lvImgSetSrc("ui_Home_Header_Cloud_Status_Icon", "cloud.png")
+		_, _ = lvImgSetSrc("ui_Home_Header_Cloud_Status_Icon", "cloud.png")
 		stopCloudBlink()
 	}
 }
@@ -152,17 +151,14 @@ func startCloudBlink() {
 	}
 
 	go func() {
-		for {
-			select {
-			case <-cloudBlinkTicker.C:
-				if cloudConnectionState != CloudConnectionStateConnecting {
-					continue
-				}
-				_, _ = lvObjFadeOut("ui_Home_Header_Cloud_Status_Icon", 1000)
-				time.Sleep(1000 * time.Millisecond)
-				_, _ = lvObjFadeIn("ui_Home_Header_Cloud_Status_Icon", 1000)
-				time.Sleep(1000 * time.Millisecond)
+		for range cloudBlinkTicker.C {
+			if cloudConnectionState != CloudConnectionStateConnecting {
+				continue
 			}
+			_, _ = lvObjFadeOut("ui_Home_Header_Cloud_Status_Icon", 1000)
+			time.Sleep(1000 * time.Millisecond)
+			_, _ = lvObjFadeIn("ui_Home_Header_Cloud_Status_Icon", 1000)
+			time.Sleep(1000 * time.Millisecond)
 		}
 	}()
 }
diff --git a/internal/timesync/timesync.go b/internal/timesync/timesync.go
index eac4749..1447201 100644
--- a/internal/timesync/timesync.go
+++ b/internal/timesync/timesync.go
@@ -21,10 +21,6 @@ const (
 
 var (
 	timeSyncRetryInterval = 0 * time.Second
-	defaultNTPServers     = []string{
-		"time.cloudflare.com",
-		"time.apple.com",
-	}
 )
 
 type TimeSync struct {
diff --git a/internal/udhcpc/parser.go b/internal/udhcpc/parser.go
index ee529aa..0820409 100644
--- a/internal/udhcpc/parser.go
+++ b/internal/udhcpc/parser.go
@@ -3,7 +3,6 @@ package udhcpc
 import (
 	"encoding/json"
 	"fmt"
-	"log"
 	"net"
 	"reflect"
 	"strconv"
@@ -73,7 +72,6 @@ func UnmarshalDHCPCLease(lease *Lease, str string) error {
 
 		parts := strings.SplitN(line, "=", 2)
 		if len(parts) != 2 {
-			log.Printf("invalid line: %s", line)
 			continue
 		}
 
diff --git a/internal/udhcpc/udhcpc.go b/internal/udhcpc/udhcpc.go
index 298ac26..4ff75ab 100644
--- a/internal/udhcpc/udhcpc.go
+++ b/internal/udhcpc/udhcpc.go
@@ -73,7 +73,7 @@ func (c *DHCPClient) Run() error {
 					c.logger.Debug().
 						Str("event", event.Name).
 						Msg("udhcpc lease file updated, reloading lease")
-					c.loadLeaseFile()
+					_ = c.loadLeaseFile()
 				}
 			case err, ok := <-watcher.Errors:
 				if !ok {
@@ -84,7 +84,14 @@ func (c *DHCPClient) Run() error {
 		}
 	}()
 
-	watcher.Add(c.leaseFile)
+	err = watcher.Add(c.leaseFile)
+	if err != nil {
+		c.logger.Error().
+			Err(err).
+			Str("path", c.leaseFile).
+			Msg("failed to watch lease file")
+		return err
+	}
 
 	// TODO: update udhcpc pid file
 	// we'll comment this out for now because the pid might change
diff --git a/network.go b/network.go
index fd62dd8..e298d52 100644
--- a/network.go
+++ b/network.go
@@ -140,7 +140,7 @@ func NewNetworkInterfaceState(ifname string) *NetworkInterfaceState {
 		PidFile:       dhcpPidFile,
 		Logger:        &logger,
 		OnLeaseChange: func(lease *udhcpc.Lease) {
-			s.update()
+			_, _ = s.update()
 		},
 	})
 
@@ -168,8 +168,8 @@ func (s *NetworkInterfaceState) update() (DhcpTargetState, error) {
 	newInterfaceUp := state == netlink.OperUp
 
 	// check if the interface is coming up
-	interfaceGoingUp := s.interfaceUp == false && newInterfaceUp == true
-	interfaceGoingDown := s.interfaceUp == true && newInterfaceUp == false
+	interfaceGoingUp := !s.interfaceUp && newInterfaceUp
+	interfaceGoingDown := s.interfaceUp && !newInterfaceUp
 
 	if s.interfaceUp != newInterfaceUp {
 		s.interfaceUp = newInterfaceUp
@@ -243,7 +243,6 @@ func (s *NetworkInterfaceState) update() (DhcpTargetState, error) {
 				scopedLogger.Info().
 					Str("old_ipv4", s.ipv4Addr.String()).
 					Msg("IPv4 address changed")
-				changed = true
 			} else {
 				scopedLogger.Info().Msg("IPv4 address found")
 			}
@@ -293,10 +292,10 @@ func (s *NetworkInterfaceState) CheckAndUpdateDhcp() error {
 	switch dhcpTargetState {
 	case DhcpTargetStateRenew:
 		s.l.Info().Msg("renewing DHCP lease")
-		s.dhcpClient.Renew()
+		_ = s.dhcpClient.Renew()
 	case DhcpTargetStateRelease:
 		s.l.Info().Msg("releasing DHCP lease")
-		s.dhcpClient.Release()
+		_ = s.dhcpClient.Release()
 	case DhcpTargetStateStart:
 		s.l.Warn().Msg("dhcpTargetStateStart not implemented")
 	case DhcpTargetStateStop:
@@ -309,7 +308,7 @@ func (s *NetworkInterfaceState) CheckAndUpdateDhcp() error {
 func (s *NetworkInterfaceState) HandleLinkUpdate(update netlink.LinkUpdate) {
 	if update.Link.Attrs().Name == s.interfaceName {
 		s.l.Info().Interface("update", update).Msg("interface link update received")
-		s.CheckAndUpdateDhcp()
+		_ = s.CheckAndUpdateDhcp()
 	}
 }
 
@@ -347,7 +346,7 @@ func initNetwork() {
 
 	// TODO: support multiple interfaces
 	networkState = NewNetworkInterfaceState(NetIfName)
-	go networkState.dhcpClient.Run()
+	go networkState.dhcpClient.Run() // nolint:errcheck
 
 	if err := networkState.CheckAndUpdateDhcp(); err != nil {
 		os.Exit(1)
diff --git a/timesync.go b/timesync.go
index 20306ec..e31f908 100644
--- a/timesync.go
+++ b/timesync.go
@@ -7,13 +7,6 @@ import (
 	"github.com/jetkvm/kvm/internal/timesync"
 )
 
-const (
-	timeSyncRetryStep     = 5 * time.Second
-	timeSyncRetryMaxInt   = 1 * time.Minute
-	timeSyncWaitNetChkInt = 100 * time.Millisecond
-	timeSyncWaitNetUpInt  = 3 * time.Second
-)
-
 var (
 	timeSync          *timesync.TimeSync
 	defaultNTPServers = []string{